STDOASME B L b - Z O A - E N G L 2000
0757b70 ObL7b7b T37
AN AMERICAN NATIONAL STANDARD
ASME B16.20a-2000 ADDENDA to
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STDOASME B L b - Z O A - E N G L 2000
0757b70 ObL7b7b T37
AN AMERICAN NATIONAL STANDARD
ASME B16.20a-2000 ADDENDA to
ASME B16.20-1998 METALLIC GASKETS FOR PIPE FLANGES Ring-Joint, Spiral-Wound, and Jacketed
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Three Park Avenue
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
New York, NY 10016
S T D - A S M E B L b - 2 0 A - E N G L 2000 H 0757b70 ObL7b77 773 0
Date of Issuance: July 21, 2000
ASME is the registered trademark of The American Society of Mechanical Engineers.
This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made availablefor public review and comment thatprovides an opportunity for additional public input from industry,academia, regulatory agencies, and the public-at-large. ASME does not "approve," "rate," or "endorse" any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentionedin thisdocument, anddoes not undertake to insure anyone utilizing a standard againstliability for infringementof any applicable letters patent, norassume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s) or person(s) affiliatedwith industry is not to be interpreted as government or industry endorsement of this code or standard. ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals.
No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.
The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990
Copyright O 2000 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
STD-ASME BLb.20A-ENGL 2000
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0759b70 ObL7b78 BOT
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ASME B16.20a-2000
Following approval by the ASME B16 Committee and ASME, and after public review, ASME B 16.20a2000 was approved by the American National Standards Institute on May 3, 2000. Addenda to the 1998 edition of ASME B 16.20 are issued in the form of replacement pages. Revisions, additions, and deletions are incorporated directly into the affected pages. It is advisable, however, that this page, the Addenda title and copyright pages, and all replaced pages be retained for reference.
SUMMARY OF CHANGES This is the first Addenda to be published to ASME B16.20-1998. Replace or insert the pages listed. Changes given below are identified on the pages by a margin note, (a), placed next to the affected area. The pages not listed are the reverse sides of the listed pages and contain no changes.
Change
Page
Location
V
Committee Roster
xi
Contents
2, 2.1
Paragraph 3.2.5
Revised
21
Table 12
Notes (1 ) and ( 3 ) revised
23
Table 14
General Note (c) and Notes ( I ) and ( 2 ) revised
24
Table 15
( I ) Title revised (2) General Notesadded
28
Table 19
Revised
35
AnnexMandatory
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
to
I
to Updated
reflect Addenda
Updated
reflect Addenda
Revised
ASME B16 COMMITTEE Standardization of Valves, Flanges, Fittings, Gaskets, and Valve Actuators (The following is the roster of the Committee at the time of approval of thisStandard.)
OFFICERS W. N. McLean, Chair H. R. Sonderegger, Vice Chair P. A. Reddington, Secretary
COMMllTEE PERSONNEL W. L. Ballis, Consultant, London, Ohio R. W. Barnes, Anric Enterprises, Etobicoke, Ontario, Canada R. R. Brodin, Fisher Controls International, Inc., Marshalltown, Iowa M. A. Clark, Nibco, Inc., Elkhart, Indiana A. Cohen, A. Cohen and Associates, Albuquerque, New Mexico C. E. Floren, Mueller Co., Decatur. Illinois D. R. Frikken, Solutia. Inc., St. Louis, Missouri R. Henrich, Minnegasco, Inc., Golden Valley, Minnesota J. C. Inch, Mueller Refrigeration Products Co., Hartsville, Tennessee G. A. Jolly, Vogt Valve Co., Louisville, Kentucky W. G. Knecht, BW/IP International, Inc., Williamsport, Pennsylvania R. Koester, The William Powell Co., Cincinnati, Ohio W. N. McLean, Newco Valves, Palos Park, Illinois M . L. Nayyar, Bechtel Power Corp., Gaithersburg, Maryland P. A. Reddington, American Society of Mechanical Engineers, New York, New York R. A. Schmidt, Trinity-Ladish Co., Russellville, Arkansas H. R. Sonderegger, Grinnell Corp., Cranston, Rhode Island W. M . Stephan, Flexitallic, Inc., Mount Laurel, New Jersey T. F. Stroud, Ductile Iron Pipe Research Association, Birmingham, Alabama M. D. Wasicek, ABS Americas, Houston, Texas R. E. White, Richard E. White and Associates, South Bend, Indiana D. A. Williams, Southern Company Services, Birmingham, Alabama L. A. Willis, The Dow Chemical Co., Freeport, Texas W. R. Worley, Union Carbide Corp.. South Charleston, West Virginia
SUBCOMMITTEE G - GASKETS FOR FLANGED JOINTS W. M. Stephan, Chair, Flexitallic, Inc., Mount Laurel, New Jersey C.B. Gillis, Vice Chair, Lamons Gasket Co., Houston, Texas M. R. Argenziano, Secretary, American Society of Mechanical Engineers, New York, New York K. A. Benton, Leader Gasket, Inc., Houston, Texas W. E. Holden, Solutia, Inc., Alvin, Texas D. H. Monroe, Consultant, Birmingham, Alabama R. T. Mueller, ExxonMobil Research and Engineering Co., Florham Park, New Jersey D. F. Reid, Garlock Metallic Gasket Division, Houston, Texas J. Tzeng, Ucar Carbon Co., Inc., Parma, Ohio W. R. Worley, Union Carbide Corp., South Charleston, West Virginia
V
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
CONTENTS ...
Foreword ................................................................................. Committee Roster .......................................................................... Correspondence Withthe B 16 Committee .................................................... Important Information Concerning Use of Asbestos or Alternative Materials .....................
v vii ix
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
.................................................................
1
..............................................................
2
...................................................................
3
2 Ring-Joint Gaskets 3 Spiral-Wound Gaskets
4 Jacketed Gaskets
Tables I Maximum Hardness for Ring Gaskets .................................................. 2 Ring Gasket Markings ................................................................ 3 Type R Ring Gasket Dimensions and Tolerances ....................................... 4 Pipe Sizes for Type R Ring Gaskets Suitable for Referenced Standards .................. 5 Type RX Ring Gasket Dimensions and Tolerances ..................................... 6 Pipe Sizes for Type RX Ring Gaskets Suitable for Referenced Standards ................ 7 Type BX Ring Gasket Dimensions and Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Pipe Sizes for Type BX Ring Gaskets Suitable for Referenced Standards ................ 9 Dimensions for Spiral-Wound Gaskets UsedWithASMEB16.5 Flanges ................. I O Dimensions for Spiral-Wound Gaskets UsedWithASMEB16.47 Series A Flanges ...... 1 1 Dimensions for Spiral-Wound Gaskets UsedWithASME B 16.47 Series B Flanges ....... 12 Inner-Ring InsideDiameters for Spiral-Wound Gaskets .................................. 13 Inner-Ring Inside Diameters for Spiral-Wound Gaskets Used BetweenASME B16.47 Series A Flanges ............................................................ 14 Inner-Ring Inside Diameters for Spiral-Wound Gaskets Used BetweenASME B 16.47 Series B Flanges ............................................................ 15 MinimumPipeWall Thickness Suitable for Use of Spiral-Wound Gaskets With Inner Rings for ASME B 16.5 Flanges ............................................... 16MaximumBoreofASME 816.5 Flanges forUseWith Spiral-Wound Gaskets . . . . . . . . . . . 17 MaximumBore ofASME B 16.47 Series A Flanges for UseWith Spiral-Wound Gaskets .............................................................. 18 MaximumBore ofASME B 16.47 Series B Flanges for UseWith Spiral-Wound Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Color Coding and Abbreviations for Spiral-Wound Gasket Materials ..................... 20Example Markings for Spiral-Wound Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Jacketed Gasket Dimensions for ASMEB16.5 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Jacketed Gasket Dimensions for ASMEB16.47 Series A Flanges ....................... 23 Jacketed Gasket Dimensions for ASMEB16.47 Series B Flanges ....................... 24 Abbreviations for Identifying Materials for Jacketed Gaskets ............................ 25 Example Markings for Jacketed Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
III
1 2 4 7 10 12 13 14 16 18 20 21
22
23 24 25 26 27 28 29 30 31 32 33 33
S T D - A S M E BLb.20A-ENGL
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Mandatory Annex I References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35
Nonmandatory Annex A Quality System Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
STDOASME BIb.20A-ENGL 2000 I0757b70 ObL7b82 230 I
ASME B16.20a-2000
METALLIC GASKETS FOR PIPE FLANGES Ring-Joint, Spiral-Wound, and Jacketed
TABLE 1 MAXIMUM HARDNESS FOR RING GASKETS
1 SCOPE
1.1 General
Maximum Hardness
This Standard covers materials, dimensions, tolerances, and markings for metal ring-joint gaskets, spiralwound metal gaskets, metal-jacketed gaskets, and filler material. These gaskets are dimensionally suitable for use with flanges described in reference flange standards ASME B 16.5, ASME 816.47, and API Specification 6A. This Standard covers spiral-wound metal gaskets and metal-jacketed gaskets for use with raised-face and flat-face flanges.
Ring Gasket Material
Soft iron (1)
Low-carbon steel 4-6 chrome ' / 2 M ~
Type 410 Type 304 Type 316 Type 347
Brinell
Rockwell "B" Scale
90
56 68 72 86
120 130 170 160
160 160
83 83 83
NOTE: (1) May be low-carbon steel, not to exceed m a x i m u m hardness of 90 Brinell-56 Rockwell "B."
1.2 Quality Systems Requirements relating to the product manufacturers' quality system programs are described in AnnexA.
It is recommended that ring-joint gaskets be of a lesser hardness thanthatof the mating flanges.
1.3References
2.3.2 Hardness. Ring-joint gaskets of materials listed in Table I shallhave a hardness equal to or less thanthat shown in Table I .
Standards and specifications adopted by reference in this Standard areshown in Annex I, whichispart of this Standard.
2.4 Marking The outer surface of each gasketshallcarrythe manufacturer's name or identification trademark and gasket number prefixed by the letters R, RX, or BX followed by the gasket material identification. Materials shall be identified as shown in Table 2. The gasket shall also be marked with an ASME B 16.20 designation. The markingshall be applied so as nottoharmfully distort the gasket or affect the integrity of the seal.
2 RING-JOINT GASKETS 2.1 Types Ring-joint gaskets shall be either octagonal or oval in cross section.
2.2 Size
2.5 Dimensions and Tolerances
Ring-joint gaskets shall be identified byanR, RX, or BX number that relates to flange size (NPS), pressure class, and the appropriate flange standards (ASME B 16.5, ASME B 16.47, or API Specification 6A).
Dimensions and tolerances for ring-joint gaskets shall be as shown in Tables 3 through 8.
2.6 SurfaceFinish 2.3 Materials
Types R and R X gaskets shallhave a finish not rougher than 63 p i n . roughness. Type BX gaskets shall have a finish not rougher than 32 pin. roughness. Surface finishesshallpertaintothe gasket-sealing surfaces.
2.3.1 General. Ring-joint gasket materials, some of which are listed in Table 1 , shallbe selected by the user based on suitability for the service conditions. I
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STD-ASME B L b - Z O A - E N G L 2000 I0757b70 O b L 7 b 8 1 L77
METALLIC GASKETS FOR PIPE FLANGES
A S M E B16.20a-2000
TABLE 2 RING GASKET MARKINGS RingGasket
Material
Identification
iron 12) Low-carbon steel 4-6 chrome Y2Mo Soft
Type 410 Type 304 Type 3 16 Type 347
Marking Example (1)
D
R51D
S
R51S
F5 (3) S 410 S 304 S 316 S 347
R51F5
R51S410 R51 S304
R51S316 R51S347
NOTES: ( 1 ) This n u m b e r shall he preceded by t h e manufacturer's
name or identification trademark. ( 2 ) M a y be l o w - c a r b o n steel, not t o exceed m a x i m u m hardness of 90 Brinell-56 Rockwell "B." (3) F5 identification designates ASTM Specification A 18272 chemical composition requirements only.
2.7 Identification Number Dimensionalreferenceidentificationnumbers are assignedtoring-jointgasketsandareshown in Tables 3 through 8.
3 SPIRAL-WOUND GASKETS 3.1 Size and Class
Spiral-wound gaskets, includingcenteringringand inner ring (paras. 3.2.4and 3 . 2 5 ) . areidentified by flangesize (NPS), pressureclass.andtheappropriate flangestandard (ASME B 16.5 or A S M E B 16.37).
3.2 Dimensions and Tolerances 3.2.1 General. Dimensionsandtolerancesforspiral-wound gaskets, centering rings, and inner rings shall be i n accordancewith Tables 9 thr-ough I I and as specified i n thissection. 3.2.2 Construction. Spiral-woundgasketsshall be constructed as alternateplies (circular layerscounted as revolutions) of preformed metal windings and plaint fillersthatarespirally wound. For thefinished gasket, thefillershallbeessentiallyflushwith.butnotbelow, themetalwinding on bothcontactfacesofthegasket. The metal strip i n thewindingshallbe 0.006 in. to 0.009 in. thick. The fillermatet-ia1 thickness shall be determined by themanufacturer. 3.2.3 Metal Joining. Theinnerwindingsshall have a minimum of threepliesofpreformedmetal strip withoutfiller. The initialtwopliesshall be spotwelded circumferentially with a minimum of three weldsspacedat a maximumdistance of 3 in. The
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outer windings.whichshallhave a minimumofthree plies of preformedmetalwithoutfiller,shallbc spotwelded circumferentially with a minimum of three welds,thelast of whichshallbetheterminalweld. The distance of the first weld from the terminal weld shallbeno greater than1.5 in. Up to four additional loose preformedmetalwindingsbeyondtheterminal weldmaybeusedtoretainthegasket into the centeringring.
3.2.4 CenteringRing. All spiral-wound gaskets shall be furnished assembled into a centering ring. The centeringringthickness chal1 be from 0.1 17 in. to 0.1 3 1 in.andsuitablygroovedontheinside diameter so astoretainthc gasket. 3.2.5 Inner Ring. Innerringsshall be furnished (a) withall spiral-wound gasketshavingPTFE(polytetrafluoroethylcne)fillermaterial. It isrecommendedthat inner rings be specified by the user for flexible graphite and other filler materials (if appropriate for flanges and bore sizes used), particularly wJhere experience has demonstratedinwardbucklingofthegaskets to be a problem. Inner rings shall be furnished in spiral-wound gasketsforflanges NPS 24 andlarger in Class 900, NPS 12 andlarger in Class 1 SOO, andNPS 4 and larger i n Class 2500. Gaskets withinnerringsshould be used only with socket welding, lapped, welding neck,andintegralflanges. Thc inner-ringthicknessshall befrom 0.1 17 in. to O. I3 I i n . Tables I2through I4 showinner-ringinside diameters that may extend a maximum of 0.06 in. into theflangeboreundertheworstcombinationofflange bore.eccentricinstallation,andtolerance.Reference Table IS for minimum pipe wall thickness for use with gasketswith inner rings.Reference Tables 16, 17, and 18 formaximumallowableboreforusewith gaskets withoutinnerrings. 3.2.6 Gasket Compression. Spiral-wound gaskets NPS NPS and NPS 1 in Classes 150. 300, and 600 shall be designed so that a uniformboltstress of 25,000psi,basedonthcnominalboltroot diameter, will compress thegasketto a thickness of 0.130 in. +O.OOS in. All othergasketsizesandclassesshallbe designed so that a uniformboltstressof30.000psi will compress thegasketto a thickness of 0.130 in. *0.005 in.
v?,
'/',
3.3 Materials Metal windings and filler materials shall be in accordance with Table 19. The inner ring shall be of a material
,
ASME B16.20a-2000
METALLIC GASKETS FOR PIPE FLANGES
thathascorrosionresistantcharacteristicsequivalentto orbetterthanthat of the metal winding. The centering ring may be carbonsteel that ispainted,metalplated, or otherwisecoated to inhibit atmosphericcorrosion.
2. I
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S T D O A S M EB L b - 2 0 A - E N G L
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ZOOU
0757b70 O b 1 7 b d 5 TLiT
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B16.20a-2000 GASKETSASME METALLIC FLANGES FOR PIPE
TABLE 12 INNER-RING INSIDE DIAMETERS FOR SPIRAL-WOUND GASKETS
(a)
~~
Flange Size (NPSI '12 3
14
1
2.19
5.19 6.19 10.56 12.50
15.75 17.69 19.69
1 1'/4 1'/z 2 2'/2 3 4 5 6 8 10 12 14 16 18 20 24
Pressure Class 150
300
400 (1)
600 900
Il, 2) 1500 (2,
0.56 0.81 .O6 1.50 1.75
0.56 0.81 1.O6 1.50 1.75
...
0.56 0.81 1.O6 1.50 1.75
... ...
2.19 2.62 3.19 4.19 5.19
...
4.04 5.05
2.19 2.62 3.10 4.04 5.05
.. .
2.62 3.19 4.19
13.75
6.19 8.50 10.56 12.50 13.75
6.10 8.10 10.05 12.10 13.50
23.75
15.75 17.69 19.69 23.75
15.35 17.25 19.25 23.25
8.50
... ...
... ... ... ...
3)
2500 (1-31
0.56 0.81 1.O6 1.31 1.63
0.56 0.81 1.O6 1.31 1.63
3.10 4.04 5.05
2.06 2.50 3.10 3.85 4.90
2.06 2.50 3.10 3.85 4.90
6.10 8.10 10.05 12.10 13.50
6.10 7.75 9.69 11.50 12.63
5.80 7.75 9.69 11.50 12.63
5.80 7.75 9.69 11.50
15.35 17.25 19.25 23.25
14.75 16.75 19.00 23.25
14.50 16.75 18.75 22.75
...
... ... ...
...
...
... ... ...
GENERAL NOTES: (a) The inner-ring thickness shall be 0.117 in. t o 0.131 in. (b) For sizes NPS 1'/4 through NPS 3, the inside diameter tolerance is20.03 in.; for larger sizes the inside diameter tolerance is k0.06 in. See Table 15 for minimum pipe wall thicknesses that are suitable for use with standard inner rings. NOTES: (1) There are no (a) NPS '12 through NPS 3 Class 400 flanges; therefore, use Class 600 flanges (b) NPS 72 through NPS 2'/2 Class 900 flanges; therefore, use Class 1500 flanges (c) NPS 14 and larger Class 2500 flanges (2) Inner rings are required for Class 900, NPS 24 gaskets; Class 1500, NPS 12 through NPS 24 gaskets; and Class 2500, NPS 4 through NPS 12 gaskets. (3) Refer t o para. 3.2.5 for required use of inner rings.
21
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FLANGES FOR PIPE
ALLIC B16.20a-2000 ASME
TABLE 13 INNER-RINGINSIDEDIAMETERS FOR SPIRAL-WOUND GASKETS USED BETWEEN ASME B16.47 SERIES A FLANGES Flange
Pressure Class
Size WS)
150
300
400
600
900 (1, 2)
26 28 30 32 34 36
25.75 27.75 29.75 31.75 33.75 35.75
25.75 27.75 29.75 31.75 33.75 35.75
26.00 28.00 29.75 32.00 34.00 36.13
25.50 27.50 29.75 32.00 34.00 36.13
26.00 28.00 30.25 32.00 34.00 36.25
38 40 42 44 46 48
37.75 39.75 41.75 43.75 45.75 47.75
37.50 39.50 41.50 43.50 45.38 47.63
37.50 39.38 41.38 43.50 46.00 47.50
37.50 39.75 42.00 43.75 45.75 48.00
39.75 41.75 43.75 45.50
50 52 54 56 58 60
49.75 51.75 53.50 55.50 57.50 59.50
49.00 52.00 53.25 55.25 57.00 60.00
49.50 51.50 53.25 55.25 57.25 59.75
50.00 52.00 54.25 56.25 58.00 60.25
GENERAL NOTES: (a) The inner-ring thickness shall be 0.117 in. to 0.131 in. (b) The inside diameter tolerance is +0.12 in. (c) These inner rings are suitable for use with pipe walls 0.38 in. or thicker. NOTES: (1) Inner rings are required for Class 900 gaskets. (2) There are no Class 900 flanges NPS 50 and larger.
22
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48.00 50.00
... ... ...
STD.ASME BLb.20A-ENGL
2000
m
0757b70 ObL7b87 812
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B16.20a-2000 GASKETSASME METALLICFLANGES FOR PIPE
TABLE 14 INNER-RING INSIDE DIAMETERS FOR SPIRAL-WOUND GASKETS USED BETWEEN ASME 616.47 SERIES B FLANGES Flange Size
ure
25.75 27.75
35.75
26 28 30 32 34 36
37.75 39.75 41.75
38 40 42
31.75
44 45.75 47.75
88 1.88 4.25 5 44
49.75 51.75 53.25 56.00 58.19 60.44
29.75 33.75
43.75
46 48 50 52 53.75 54 56 58 60
25.75 27.75 29.75 31.75 33.75 35.75
25.75 27.63 29.63 31.50 33.50 35.38
25.38 27.00 29.63 31.25 33.50 35.50
26.25 28.25 30.75 33.00 35.25 36.25
38.25 40.25 42.75 44.25 46.38 48.50
37.50 39.38 41.38 43.50 46.00 47.50
37.50 39.75 42.00 43.75 45.75 48.00
39.75 41.75 43.75 45.50 48.00 50.00
...
...
... ... ...
53.75
...
GENERAL NOTES: (a) The inner-ring thickness shall be 0.117 in. to 0.131 in. (b) The inside diameter tolerance is ~ 0 . 1 2 in. (C) These inner rings are suitable for use with pipe walls 0.375 in. or thicker. NOTES: (1) Inner rings are required for Class 900 gaskets. Refer to para. 3.2.5 for required use of inner rings. (2) There are no NPS 50 and larger Class 900 flanges.
23
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(al
STD-ASME B L b - Z O A - E N G L 2000 E D757b70 ObL7b88 757
GASKETS METALLIC ASME B16.20a-2000
(a)
m
FLANGES FOR PIPE
TABLE 15 MINIMUM PIPEWALLTHICKNESSSUITABLEFORUSEOFSPIRAL-WOUNDGASKETS WITH INNER RINGS FOR ASME B16.5 FLANGES Flange Size
Pressure Class
WS)
150
300
400
600
900
1500
2500
'12 "4
80
Schedule
1
1
1v 4 1'/2 2
Schedule 40
2
3
4 Schedule 80
5 6
8 10
12 14 16
Schedule 10s
Schedule 30
18 20
Schedule 80
1
24 GENERAL NOTES: (a) The pipe wall schedules identified represent the minimum recommended pipe wall thickness suitable for use with inner rings for ASME B16.5 flanges. (Reference ASME B36.10M and B36.19M.l (b) Gaskets with inner rings should be used only with socket welding, lapped, welding neck, and integral flanges.
24
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STDeASME BLb.20A-ENGL
GASKETS METALLIC
2000 M 0759b70 Ob27689 h 9 5
m
FOR PIPE FLANGES
ASME B16.20a-2000
TABLE 18 MAXIMUM BOREOF ASME B16.47 SERIES B FLANGES FOR USE WITH SPIRAL-WOUND GASKETS Flange Size WS)
26 28 30 32 34 36 38 40 44 46 48 50 52 54 56
Pressure Class 150
300
400
600
900 111
Welding neck and integral flanges having maximum insidediameters as described in ASME 816.47
58
60 GENERAL NOTE: This table shows the maximum boreof flanges for which the spiral-wound gasket dimensions shown in Table 1 1 are recommended, considering the tolerances involved, the possibility of eccentric installation, and the possibility that the gasket may extend into the assembled flange bore. NOTES: (1) Inner rings are required for Class 900 gaskets, NPS 26 through NPS 48 (see para. 3.2.5). (2)There are no Class 900 flanges NPS 50 and larger.
27
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S T D = A S M E BLb.20A-ENGL
2000 B 0 7 5 7 b 7 0 ObL?bSO 307
ALLIC B16.20a-2000 ASME
FOR PIPE FLANGES
(a)
TABLE 19 COLOR CODING AND ABBREVIATIONS FOR SPIRAL-WOUND GASKET MATERIALS Metallic Winding Materials Material
Abbreviation
Color Code
Carbon steel 304 SS 304 L SS
CRS 304 304 L
Silver Yellow No color
309 SS 310 SS 316 L SS 317 L SS
309 310 316 L 317 L
No color No color Green Maroon
347 SS 321 SS 430 SS
347 32 1 430
Blue Turquoise No color
Ni-Cu Monel 400 Grade 400
MON
Orange
NI TI
Nickel 200 Titanium 20Cb-3 alloy
A-20
Red Purple Black
Ni-Mo Hastelloy B Grade B2
HAST B
Brown
...
...
HAST C
Beige
Ni-Mo-Cr Hastelloy C Grade C-276 Ni-Cr-Fe lnconel 600 Grade 600
...
...
INC 600
Gold
...
Ni-Cr-Fe-Cb lnconel 625 Grade 625
INC 625
Gold
...
...
Ni-Cr-Fe-Ti lnconel X-750 Grade X-750
INX
No color
...
...
IN 800
White
Ni-Fe-Cr-Mo-Cu lncoloy 825 Grade 825
IN 825
White
Zirconium
ZlRC
No color
Ni-Fe-Cr lncoloy 800 Grade 800
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STD-ASME B L b = Z O A - E N G L 2000 II 0759b70 O b L 7 b 7 L 243
ASME B16.20a-2000
MANDATORY ANNEX I REFERENCES
IS0 9000-1: 1994, Qualitymanagementand quality assurance standards - Part 1 : Guidelines for selection anduse I S 0 9000-2: 1997, Quality management and quality assurance standards - Part2: Generic guidelines for the application of IS0 9001, IS0 9002, and I S 0 9003 IS0 9000-3: 1997, Quality management and quality assurance standards - Part 3: Guidelines for the application of IS0 9001 to the development, supply, installation, and maintenance of computer software IS0 9001 : 1994, Quality systems - Model for quality assurance in design, development, production, installation, and servicing IS0 9002: 1994, Quality systems - Model for quality assurance in production, installation, and servicing IS0 9003: 1994, Quality systems - Model for quality assurance infinal inspection and test Publisher: International Organization for Standardization (ISO), 1 me de Varembé, Case postale 56, CH-I21 1 Genève 20, SwitzerlandSuisse
The following is a listof publications referenced in this Standard. API Specification 6A - 17th Edition - 1996, Specification for Valves andWellheadEquipment Publisher: American Petroleum Institute (API), 1220 L Street, NW, Washington, DC 20005 ASME B16.5-1996, Pipe Flanges and Flanged Fittings' ASME B 16.47-1996, Large Diameter Steel Flanges: NPS26throughNPS 60' ASME B36.10M-1996, Welded and Seamless Wrought Steel Pipe' ASME B36.19M-1985 (R1994), Stainless Steel Pipe' Publisher: American Society of Mechanical Engineers (ASME), Three ParkAve.,NewYork, NY 10016; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007
' May
also be obtained from the American National Standards Institute (ANSI), I I West 42nd Street, New York, NY 10036.
35
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AMERICAN NATIONAL STANDARDS FOR PIPING. PIPE FLANGES. FITTINGS. AND VALVES Scheme for the Identification of Piping Systems........................................................... .A13.1.1996 Pipe Threads. General Purpose (Inch) ............................................................. B1.20.1-1983(R1992) DrysealPipeThreads(1nch) ...................................................................... B1.20.3-1976(R1998) Cast Iron Pipe Flanges and Flanged Fittings: Classes 25. 125. and 250 ........................................ ,816.1-1998 Malleable IronThreaded Fittings: Classes 150 and 300 ...................................................... .B16.3.1998 Gray Iron Threaded Fittings: Classes 125 and 250 .......................................................... .B16.4.1998 Pipe Flanges and Flanged Fittings(NPS 'h Through NPS 24) ................................................ .B16. 5-1996 Factory-Made Wrought Steel Buttwelding Fittings.......................................................... .B16. 9-1993 .B16.1 0-1992 Face-to-Face and End-to-End Dimensions of Valves ....................................................... Forged Fittings. Socket-Welding and Threaded ............................................................ .816.1 1-1996 Castlron Threaded Drainage Fittings ..................................................................... 616.12-1998 Ferrous Pipe Plugs. Bushings. and Locknuts with Pipe Threads ............................................. .B16.14.1991 Cast Bronze Threaded Fittings:Classes 125 and 250 ................................................. B16.15-1985(R1994) Cast Copper Alloy Solder Joint Pressure Fittings .................................................... B16.18-1984(R1994) .B16.20.1998 Metallic Gaskets for Pipe Flanges:Ring.Joint. Spiral-Wound. and Jacketed................................... Nonmetallic Flat Gaskets for Pipe Flanges................................................................ .B162 1.1992 Wrought Copper andCopper Alloy Solder Joint Pressure Fittings ........................................... .B16.2 2.1995 D W .................................................. ,816.23-1992 Cast Copper Alloy Solder Joint Drainage Fittings Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150. 300. 400. 600. 900. 1500. and 2500 .... B16.24-1991(R1998) B16.25-1997 Buttwelding Ends ....................................................................................... Cast Copper Alloy Fittings for Flared Copper Tubes....................................................... .B1626.1988 Wrought Steel Buttwelding Short Radius Elbows and Returns .............................................. .B16.28.1994 .B16.2 9-1994 Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings D W .......................... Manually Operated Metallic Gas Valves for Use in Gas Piping Systems up to 125 psig .B16.33-1990 (Sizes Through 2) ............................................................................... Valves - Flanged. Threaded. and Welding End........................................................... .816.3 4-1996 Orifice Flanges ......................................................................................... 816.36-1996 Large Metallic Valves for Gas Distribution (Manually Operated. NPS 2l/* to 12. 125 psig Maximum) ...... B16.38-1985(R1994) ,816.39-1998 Malleable Iron Threaded Pipe Unions .................................................................... Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Systems . . . . . . . . . . . . . . . .B16.40-1985(R1994) ,816.42-1998 Ductile Iron Pipe Flanges and Flanged Fittings. Classes 150 and 300 ........................................ Manually Operated Metallic Gas Valves for Use in House Piping Systems ................................... .B16.44.1995 Cast Iron Fittings forSoventa Drainage Systems.......................................................... .816.45-1998 .B16.4 7-1996 Large Diameter Steel Flanges(NPS 26 Through NPS 60) ................................................... Steel Line Blanks ....................................................................................... B16.48-1997 Factory-Made Wrought Steel Buttwelding Induction Bends for Transportation and DistributionSystems . . . . . . . . .B16.4 9.2000 Power Piping............................................................................................ 831.1-1998 .B31.2.1968 Fuel Gas Piping (not an ANSI standard) ................................................................... Process Piping .......................................................................................... 831.3-1999 Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids .................................. .B31.4.1998 Refrigeration Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 831.5-1992 ......................................................... .831.8.1999 Gas Transmission and Distribution Piping Systems Building Services Piping................................................................................. .831.9-1996 831.11-1989 Slurry TransportationPiping Systems..................................................................... .B316.1991 Manual for Determining the Remaining Strength of Corroded Pipelines...................................... Welded and Seamless Wrought Steel Pipe.............................................................. B36.10M-1996 StainlessSteel Pipe ............................................................................ B36.19M-l985(R1994) Self-operated and Power-Operated Safety-Related Valves Functional Specification Standard . . . . . . . . . . . . .N278. 1.1975(R1992)
-
-
The ASME Publications Catalog shows a complete list of all the Standards publishedby the Society. For a complimentary catalog. or the latest information about our publications. call I-800-THE-ASME (1.800.843.27631 .
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The American Society of Mechanical Engineers
A N
A M E R I C A N N A T I O N A L S T A N D A R D
METALL E I GASKETS FOR P P IEFLANGES Ring-Joint, Spiral-Wound, and Jackeltd
ASME B16.20-1MM8 (Revision01 ASME B18.20-1993)
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Date of Issuance: April 28, 2000
The 1998 edition of this Standard is beingissued with an automatic addenda subscription service. The use of addenda allows revisions made in response to public review comments or committee actions to be published on a regular yearly basis; revisions published in addenda will become effective 6 months after the Date of Issuance of the addenda. The next edition of this Standard is scheduled for publication in 2003.
ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. The interpretations will be included with the above addenda service.
ASME is the registered trademark of The American Society of Mechanical Engineers.
This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that providesan opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not “approve,” “rate,“ or “endorse’’ any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rightsasserted in connection with any items mentioned in thisdocument, and does not undertake to insure anyone utilizing a standard against liabilityfor infringement any of applicable letters patent, nor assumes any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this codeor standard. ASME accepts responsibility for only those interpretations issued in accordance with established ASME procedures and policies, which precludes the issuance of interpretations by individuals.
No part of this document maybe reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of thepublisher.
The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990
Copyright Q 2000 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.
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Ring-joint gaskets andgroovesprobably originated in theboilerfield,wheretheywere used in various forms formanholecovers, autoclaves, and other closures; however, it was in the oil industry (both in the production and refining of oil) that they received the greatest recognitionandweredevelopedintotheirpresent form.Their useexpanded steadily as temperatures and pressures were increased in steam plants. Tests examining their application in flangesand valves wereconducted as early as 1928. In June 1936,theAmericanPetroleum Institute (API) issued TentativeStandard5-G-3 on Ring-Joints for Steel Flanges and Flange Unions for usewithAPI Tubular Goods. This standard wasknown as API Specification 6B, Ring-Joint Flanges. Following the acceptance of ring-joints for flanges and valves byAPIandthe issuance of their standard, ASAB16e on Steel Pipe Flanges andFlangedFittingswasrevised to includethem,andthe 1939 edition includedstandard dimensions for a full line ofring-jointflangesbasedontheAPI standard. Developmentwork continued, andAPI formulated Standard 6E, Specification for WellheadEquipment,whichincludedring-jointsnotcovered in ASA B16e-1939. In 1949, the American Standards Association (ASA), Sectional Committee B16, Subcommittee3,SteelFlangesandFlangedFittings,assembled the available informationonring-joint gaskets into a single standard. ASA approvalwasgrantedonApril30,1952,withthe designation ASA B 16.20-1 952. Ring gaskets for Class 900 (900 lb at that time) in sizes NPS 26 through 36 were added, andASA approvalwasgrantedonApril30,1952. An updatedversionwas submitted, andASAapprovalwasgrantedonApril 4, 1955, with the designation ASA B 16.20-1955. The standardwasreviewed,andreaffirmation approvalwasgranted by theASAonApril25,1963. The standardwasreviewed,andreaffirmationapprovalwasgranted by theAmerican National Standards Institute (ANSI) on April 25, 1973, with the designation of an American National Standard. API requested that ASME convert their gasket standard, API 601, into an ASME American National Standard. As a result of that request, this edition wasexpanded to include requirements for spiral-woundand jacketedgaskets thatwereformerlylisted in API 601, 7th edition, 1988. Also, ring-joint groove dimensions are not included in this edition because they are included in ASMWANSI B 16.5-1988,titledPipeFlangesandFlanged Fittings, andASME B16.47-1990, titledLargeDiameterSteelFlanges. The 1993 edition wasapproved by the BI6 StandardsCommittee. Following approval by ASME,approval byANSIwas given on January22,1993,withthe designation ASME B16.20-1993. In the1998 edition ofASME B 16.20, reference standards are updated, a qualitysystem program annex is added, innerringinside diameters for spiral-woundgaskets are revised, andseveral editorial revisionsaremade.Followingapproval by ASME BI6 Subcommittee B andtheB16Main Committee, ANSI approved thisAmericanNational Standard on November 20, 1998. Requests for interpretations or suggestions for revisionshould be sentto The American Society of Mechanical Engineers; Secretary, BI6 Committee;Three Park Avenue, New York, NewYork 1 0 0 1 6-5990.
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111
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ASME B16 COMMITTEE Standardization of Valves, Flanges, Fittings, Gaskets, and Valve Actuators (The following is the roster of the Committee at the timeof approval of this Standard.)
OFFICERS W. N. McLean, Chair
R. A. Schmidt, Vice Chair P. A. Reddington, Secretary
COMMITTEE PERSONNEL W. L. Ballis, Consultant, London, Ohio R. W. Barnes, Anric Enterprises, Etobicoke, Ontario, Canada R. R. Brodin, Fisher Controls International, Inc., Marshalltown, Iowa M. A. Clark, Nibco, Inc., Elkhart, Indiana A. Cohen, A. Cohen and Associates, Albuquerque, New Mexico C. E. Floren, Mueller Co., Decatur, Illinois D. R. Fríkken, Solutia, Inc., St. Louis, Missouri R. Henrich, Minnegasco, Inc., Golden Valley, Minnesota J. C. Inch, Mueller Refrigeration Products Co., Hartsville, Tennessee G. A. Jolly, Vogt Valve Co., Louisville, Kentucky W. G. Knecht, BW/IP International, Inc., Williamsport, Pennsylvania R. Koester, The William Powell Co., Cincinnati, Ohio W. N. McLean, Newco Valves, Palos Park, Illinois M. L. Nayyar, Bechtel Power Corp., Gaithersburg. Maryland P. A. Reddington, American Society of Mechanical Engineers, New York, New York R. A. Schmidt, Trinity-Ladish Co., Russellville, Arkansas H. R. Sonderegger, Grinnell Corp., Cranston, Rhode Island W. M. Stephan, Flexitallic, Inc., Mount Laurel, New Jersey T. F. Stroud, Ductile Iron Pipe Research Association, Birmingham, Alabama M. D. Wasicek, ABS Americas, Houston, Texas R. E. White, Richard E. White and Associates, South Bend, Indiana D. A. Williams, Southern Company Services, Birmingham, Alabama L. A. Willis, The Dow Chemical Co., Freeport, Texas W. R. Worley, Union Carbide Corp., South Charleston, West Virginia
SUBCOMMITTEE G - GASKETS FOR FLANGED JOINTS W. M. Stephan, Chair, Flexitallic, Inc., Mount Laurel, New Jersey C. B. Gillis, Vice Chair, Lamons Gasket Co., Houston, Texas B. P. Feder, Secretary, American Society of Mechanical Engineers, New York, New York K. A. Benton, Leader Gasket, Inc., Houston, Texas W. E. Holden, Solutia, Inc., Alvin, Texas D. H. Monroe, Consultant, Birmingham, Alabama R. T. Mueller, ExxonMobil Research and Engineering Co., Florham Park, New Jersey D. F. Reid, Garlock Metallic Gasket Division, Houston, Texas J. Tzeng, Ucar Carbon Co., Inc., Parma, Ohio W. R. Worley, Union Carbide Corp., South Charleston, West Virginia
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CORRESPONDENCE WITH THE B16 COMMllTEE
General. ASME Standards aredevelopedandmaintainedwiththeintenttorepresentthe consensus of concernedinterests. As such, usersofthisStandardmayinteractwiththe Committee by requesting interpretations, proposingrevisions,andattending Committee meetings. Correspondence shouldbeaddressed to:
Secretary, B 16 Main Committee The American Society of MechanicalEngineers Three Park Avenue New York, NY 10016-5990 Proposing Revisions. Revisions are madeperiodicallytothe Standard toincorporate changes that appear necessary or desirable, as demonstrated by the experience gained from theapplication of the Standard. Approvedrevisionswill be published periodically. The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specific as possible, citing theparagraphnumber(s), the proposedwording,and a detailed description of the reasons for the proposal, including any pertinent documentation. Interpretations. Uponrequest,the BI6 Committeewillrenderaninterpretationofany requirement ofthe Standard. Interpretationscanonlyberendered in response to a written requestsenttothe Secretary of the B 16 MainCommittee. The request for interpretation should be clear and unambiguous. It is further recommended that the inquirer submit hidher requestinthefollowingformat:
Subject: Edition:
Cite the applicable paragraph number(s) and the topic of the inquiry. Cite the applicable edition the of Standard for which the interpretation isbeingrequested. Question: Phrase the question as a request for interpretation an of a specific as a request requirement suitable for general understanding and use, not for anapproval of a proprietarydesign or situation. The inquirer may also includeanyplans or drawings, whicharenecessary to explain the question; however,theyshouldnotcontainproprietarynamesor information. Requeststhatarenot in this format willbe rewritten in this format by theCommittee prior to being answered, whichmayinadvertentlychangetheintentoftheoriginalrequest. ASMEproceduresprovideforreconsiderationofanyinterpretationwhenor if additional informationthatmight affect an interpretationis available. Further, personsaggrieved by an interpretation may appealtothe cognizant ASME Committee or Subcommittee. ASME does not “approve,” “certify,” “rate,” or “endorse” any item, construction, proprietary device, or activity. Attending Committee Meetings. The B I 6 Main Committee regularly holds meetings, which are opentothepublic.Personswishing to attendanymeetingshould contact the Secretary ofthe BI6 Main Committee.
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IMPORTANT INFORMATION CONCERNING USE OF ASBESTOS OR ALTERNATIVE MATERIALS
Asbestosisreferenced for use as a fillermaterial in metallic gaskets. It hasserved as a universalsealingmaterial, compatible withmostfluid services. It hasbeenof extreme usefulness in minimizingfire hazards. Certain serious adverse health effects are associated with asbestos, among them the serious and often fatal diseases of lung cancer, asbestosis, and mesothelioma (a cancer of the chest andabdominal linings). The degree of exposure toasbestosvarieswiththeproductand theworkpracticesinvolved. ConsultthemostrecenteditionoftheOccupationalSafetyandHealthAdministration, US. Department of Labor, Occupational Safety and Health Standard for Asbestos, Tremolite, Anthophyllite,andActinolite, 29 Code of FederalRegulationsSection 1910.1001; the U.S. EnvironmentalProtectionAgency,NationalEmissionStandard for Asbestos, 40 Code of FederalRegulations Sections 61.I40 through 61.156; andtheproposedrule by the U.S. EnvironmentalProtectionAgencyproposinglabelingrequirementsandphasedbanning of asbestosproducts,publishedat 51 FederalRegister 3738-3759 (January 29,1986). There are currently in useandunderdevelopment a number of substitute materials to replace asbestos in certain applications. Manufacturers and users are encouraged to develop anduse effective substitute materialsthatcanmeetthe specifications for, and operating requirements of, theequipmenttowhichtheywouldapply. Informationconcerningsafetyandhealthrisksandproperprecautions with respect to particular materials and conditions should be obtained from one’s employer, the manufacturer or supplier ofthatmaterial, or theMaterialSafetyData Sheet.
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CONTENTS
Foreword ................................................................................. Committee Roster .......................................................................... Correspondence With the B I6 Committee .................................................... Important Information Concerning Use of Asbestos or Alternative Materials ..................... 1 Scope
...............................................................................
V
vii
ix 1
.................................................................
1
..............................................................
2
...................................................................
3
2 Ring-Joint Gaskets
3 Spiral-Wound Gaskets
4 Jacketed Gaskets
...
111
Tables 1 Maximum Hardness for Ring Gaskets .................................................. 2 Ring Gasket Markings ................................................................ 3 Type R RingGasketDimensionsand Tolerances ....................................... 4 Pipe Sizes for TypeR Ring Gaskets Suitable for Referenced Standards .................. 5 Type RX RingGasketDimensionsand Tolerances ..................................... 6 Pipe Sizes for Type RX Ring Gaskets Suitable forReferenced Standards ................ 7Type BXRingGasketDimensionsand Tolerances ..................................... 8 Pipe Sizes for Type BX Ring Gaskets Suitable for Referenced Standards ................ 9 DimensionsforSpiral-Wound Gaskets UsedWithASME B16.5 Flanges ................. 10 DimensionsforSpiral-Wound Gaskets UsedWithASMEB16.47 Series A Flanges ...... 11 Dimensionsfor Spiral-WoundGaskets UsedWithASMEB16.47 Series BFlanges ....... 12Inner-RingInsideDiametersforSpiral-Wound Gaskets .................................. 13 Inner-Ring InsideDiameters for Spiral-Wound Gaskets UsedBetweenASME B 16.47 Series A Flanges ............................................................ 14 Inner-RingInsideDiametersforSpiral-Wound Gaskets UsedBetweenASME B16.47 Series B Flanges ............................................................ 15 MinimumPipeWall Thickness Suitable for UseWithInnerRings for ASME B 16.5Flanges ............................................................... 16MaximumBore ofASME B 16.5Flanges for UseWith Spiral-WoundGaskets ........... 17 MaximumBore of ASME 816.47 Series AFlanges for UseWith Spiral-Wound Gaskets .............................................................. 18 MaximumBore ofASME B 16.47 Series B Flanges for UseWith Spiral-WoundGaskets .............................................................. 19 Color CodingandAbbreviationsfor Spiral-WoundGasket Materials ..................... 20 ExampleMarkings for Spiral-WoundGaskets ........................................... 21 Jacketed GasketDimensions for ASMEB16.5Flanges .................................. 22 JacketedGasket DimensionsforASME B 16.47 Series A Flanges ....................... 23Jacketed GasketDimensionsforASME B 16.47 Series B Flanges ....................... 24 Abbreviations for Identifying Materials for JacketedGaskets ............................ 25 ExampleMarkingsforJacketed Gaskets ............................................... xi
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1 2 4 7
IO 12 13 14 16 18
20 21 22
23 24 25
26 27 28 29 30
31 32 33 33
Mandatory Annex I References ...........................................................................
35
Nonmandatory Annex A Quality System Program
37
..............................................................
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ASME 816.20-1998
METALLIC GASKETS FOR PIPE FLANGES Ring-Joint, Spiral-Wound, and Jacketed
TABLE 1 MAXIMUM HARDNESS FOR RING GASKETS
1 SCOPE 1.1 General
Maximum Hardness
This Standard covers materials, dimensions, tolerances, and markings for metal ring-joint gaskets, spiralwound metal gaskets, metal-jacketed gaskets, and filler material. These gaskets are dimensionally suitable for use with flanges described in reference flange standards ASMEB16.5,ASME B16.47, and APISpecification 6A. This Standard covers spiral-wound metal gaskets and metal-jacketed gaskets for use with raised-face and flat-faceflanges.
Ring Gasket Material
Brinell
Rockwell "B" Scale
Soft iron (1) Low-carbon 68 steel 4-6 chrome SiMo Type 86 410 Type 304 Type 316 Type 347
90 120 130 170 160 160 160
56 72 83 83 83
NOTE: ( 1 ) May be low-carbon steel, not t o exceed maximum hardness of 90 Brinell-56 Rockwell "B."
1.2 Quality Systems Requirements relating to the product manufacturers' qualitysystem programs are described in Annex A.
It is recommended that ring-joint gaskets be of a lesser hardness than that of the mating flanges.
1.3References
2.3.2Hardness. Ring-joint gaskets of materials listed in Table 1 shall have a hardness equal to or lessthanthat shown in Table 1.
Standards and specifications adopted by reference in this Standard are shown in Annex I, which is part of this Standard.
2.4 Marking The outer surface of each gasket shall carry the manufacturer's name or identification trademark and gasket number prefixed by the letters R, RX, or BX followed by the gasket material identification. Materials shall be identified as shown in Table 2. The gasket shall also be marked with anASME B 16.20 designation. The marking shall be applied so as notto harmfully distortthe gasket or affect the integrity of the seal.
2 RING-JOINT GASKETS 2.1 Types Ring-joint gaskets shall be either octagonal or oval
in cross section. 2.2 Size
2.5 Dimensions and Tolerances
Ring-joint gaskets shall be identified byanR,RX, or BX number that relates to flange size (NPS), pressure class, and the appropriate flange standards (ASME 816.5, ASME B16.47, or API Specification 6A).
Dimensions and tolerances for ring-joint gaskets shall be as shown in Tables 3 through 8.
2.6 SurfaceFinish
2.3 Materials
Types R andRX gaskets shallhave a finishnot rougher than 63 Fin. roughness. Type BX gaskets shall have a finish not rougher than 32 Fin. roughness. Surface finishesshallpertaintothe gasket-sealing surfaces.
2.3.1 General. Ring-joint gasket materials, some of which are listed in Table I , shall be selected by the user based on suitability for the service conditions. I
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METALLIC GASKETS FOR PIPE FLANGES
ASME 816.20-1998
TABLE 2 RINGGASKET MARKINGS Ring Gasket Material
Soft iron (2) Low-carbon steel 4-6 chrome '/zMo Type 410 Type 304 Type 316 Type 347
outer windings, which shall have a minimum of three plies of preformedmetalwithoutfiller,shall be spotwelded circumferentially with a minimum of three welds,the last ofwhichshallbetheterminalweld. The distance of the first weld from the terminal weld shallbeno greater than 1.5 in. Up to four additional loosepreformed metal windingsbeyond the terminal weldmaybeused to retain the gasket into the centeringring.
Identification Marking Example (1)
D S F5 (3) R51S410 S 410 R51S304 S 304 R51S316 S 316 S347 R51 S 347
R51D R51S R51F5
NOTES: (1)Thisnumbershallbepreceded by the manufacturer's name or identification trademark. (2) May be low-carbon steel, not to exceed maximum hardness of 90 Brinell-56 Rockwell "B." (3) F5 identification designates ASTM Specification A 18272 chemical composition requirements only.
3.2.4Centering Ring. All spiral-wound gaskets shall be furnished assembled into a centering ring. The 0.1 17 in. to centeringringthicknessshallbefrom O. 13 I in. and suitably grooved on the inside diameter so as toretain the gasket. 3.2.5 InnerRing. Innerringsshallbefurnished withallspiral-wound gaskets having PTFE (polytetrafluoroethylene)fillermaterial.It is recommendedthat inner rings be specified by the user for flexible graphite and other filler materials (if appropriate for flanges and bore sizes used),particularlywhere experiencehas demonstratedinwardbuckling ofthe gaskets to be a problem. Inner rings shall be furnished in spiral-wound gaskets forflanges NPS 24 and larger in Class 900, NPS 12 andlarger in Class 1500, and NPS 4 and larger in Class 2500. Gaskets withinnerringsshould beusedonlywithsocketwelding,lapped,welding neck,andintegralflanges. The inner-ringthicknessshall be from 0.1 17 in. to O. 13 I in. Tables 12 through 14 show inner-ring inside diameters that may extend a maximum of 0.06 in. into theflangeboreundertheworstcombinationofflange bore, eccentric installation, andtolerance.
2.7 IdentificationNumber Dimensional reference identification numbers are assigned to ring-joint gaskets andareshown in Tables 3 through 8.
3 SPIRAL-WOUND GASKETS 3.1 Sizeand Class Spiral-wound gaskets, includingcenteringringand innerring(paras. 3.2.4 and 3.2.5), areidentified by flangesize (NPS), pressure class, andtheappropriate flange standard (ASME B16.5 or ASME B 16.47).
3.2 DimensionsandTolerances 3.2.1 General. Dimensionsandtolerances for spiral-wound gaskets, centering rings, and inner rings shall be in accordance with Tables 9 through I 1 and as specifiedinthissection.
3.2.6 Gasket Compression. Spiral-wound gaskets NPS y!, NPS and NPS 1 in Classes 150, 300, and 600 shallbedesigned so that a uniformbolt stress of 25,000 psi,basedonthenominalboltroot diameter, will compress the gasket to a thickness of 0.130 in. k0.005 in. All other gasket sizes and classes shall be designed so that a uniformbolt stress of 30,000 psi will compress thegasketto a thickness of O. 130 in. .c0.005 in.
v4,
3.2.2 Construction. Spiral-wound gaskets shall be constructed as alternate plies (circular layerscounted as revolutions) of preformed metal windings and plaint fillersthat are spirally wound. For thefinished gasket, the filler shall be essentially flush with, but not below, the metal winding on both contact faces of the gasket. The metal strip in thewindingshallbe 0.006 in. to 0.009 in.thick. The fillermaterialthicknessshallbe determined by themanufacturer.
3.3 Materials Metal windings and filler materials shall be in accordance with Table 19. The inner ring shall be of a material that has corrosion resistant characteristics equivalent to or better than that of the metal winding. The centering ringmaybecarbonsteelthatispainted,metalplated, or otherwise coatedtoinhibit atmospheric corrosion.
3.2.3 Metal Joining. The innerwindingsshall have a minimumofthreepliesofpreformedmetal be spotstrip withoutfiller. The initialtwopliesshall weldedcircumferentiallywith a minimum of three weldsspacedat a maximumdistance of 3 in. The 2
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ASME B16.20-1998
METALLIC GASKETS FOR PIPE FLANGES
3.4 Marking
4.2 Design
3.4.1 General. The centering ring of each spiralwound gasket shallbepermanentlymarked. The letteringheight shall be a minimum of 0.1 in. The following information shall be included with the centeringringmarkings: ( a ) Manufacturer’s name or trademark. (b) Flange size (NPS). (c) Pressure class. (d) Winding metal abbreviation (Table l9), except that the abbreviation may be omitted when 304 stainless steelisused. ( e ) Fillermaterial abbreviation (Table 19). (f) Centering and inner ring metal abbreviation (Table 19), except that the abbreviation maybe omitted when carbon steel is used for the outer ringand 304 stainless steelisused for the inner ring. (g) Flange identification. Gaskets intended for ASME B 16.47 flanges shall be marked B 16.47 A or B 16.47 B, as applicable. Gaskets intended for ASME B16.5 flangesneednot be so marked. Illustrative marking examples are shown in Table 20. ( h ) ASME B16.20 designation.
4.2.1 General. Jacketed gaskets shall be made with a fillermaterial enclosed in a metal jacket. 4.2.2JacketThickness. The jacket metal thicknessshall be a minimum of 0.015 in. 4.2.3 FillerThickness. The filler thickness shall be a minimum of 0.06 in. 4.2.4 Miscellaneous. Other design details, including the density of the filler, shall be the gasket manufacturer’s responsibility. 4.3 Dimensions and Tolerances Gasket dimensions and tolerances shall be in accordance with Tables 21, 22, or 23.
4.4 Materials Metal jacket and filler material shall be selected from Table 24. For jacketed gasket limitations related to ASME B 16.5 applications, see Annex E of ASME
B16.5. 4.5 Marking
3.4.2PressureClass. Gaskets suitable for more than one pressure class shall be marked with all applicable classes, as shown in Table 20.
4.1 Size and PressureClass
4.5.1 Applied Marking. Jacketed gaskets shall be marked with waterproof inkor equivalent. Where gasket size does not permit such markings, a separate attached markingtag maybeused. The lettering height shall be a minimum of 0.2 in. The following information shall be includedwiththe markings: (a) Manufacturer’s name or trademark. (b) Flange size (NPS). (c) Pressure class. (dl Jacketed material abbreviation (Table 24), except that the abbreviation may be omitted when soft carbon steel is used. ( e ) Filler material abbreviation (Table 24). (f) Flange identification. Gaskets intended for ASME B 16.47 flangesshall be marked B 16.47 A or B 16.47 B, as applicable. Gaskets intended for ASME B 16.5 flangesneednotbe so marked. Illustrative marking examples are shown in Table 25. ( g ) ASME B 16.20 designation.
Jacketed gaskets are identified by flange size (NPS), pressureclass, and theappropriate flange standard (ASME B 16.5 or ASME B 16.47).
4.5.2 PressureClass. Gaskets suitable for more than one pressure class shall be marked with all applicable classes.
3.4.3 Color Coding. Spiral-wound gaskets shall be marked with a color code thatidentifiesthewindings andfiller materials. A continuous color aroundthe outer edge of the centering ringshallidentify the winding metal. The color identifying the filler material have four intermittent for NPS 1 and larger shall stripes spaced approximately 90 deg apart on the outer edge ofthe centering ring. Smaller size gaskets shall have a minimum of two stripes 180 deg apart. The colors shallconform to those listed in Table 19.
4 JACKETEDGASKETS
3
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
ASME
816.20-1998
METALLIC GASKETS FOR PIPE FLANGES
23 deg
n
Octagonal
Oval
TABLE 3 TYPE R RING GASKET DIMENSIONS AND TOLERANCES Height of Ring Ring Number
1.344
Pitch Diameter of Ring, P
50 75
R-I 1 R-I2 R-I3 R-14 R-15
R-I6 R-17
2.000
50
R-I8
2.375
63
1.688
Width of Ring, A
Oval,
B
Octagonal, H
0.44
0.38
Width of Flat on Octagonal Ring, C
Radius in Octagonal Ring, R,
0.250 0.313 0.50 0.313 0.50 0.313 0.50 0.50 0.313
0.56 0.56 0.56 0.56
0.170 0.206 0.206 0.206 0.206
0.06 0.06 0.06 0.06 0.06
0.56 0.56 0.56 0.56 0.56
0.206 0.206 0.206 0.206 0.206
0.06
563 688
R-19 R-20
0.3 13 0.50 0.313 0.50 0.313 0.50 0.313 0.50 0.50 0.313
44 50 250 50 00
R-21 R-22 R-23 R-24 R-25
0.438 0.63 0.313 0.50 0.438 0.63 0.438 0.63 0.50 0.313
0.69 0.56 0.69 0.69 0.56
0.305 0.206 0.305 0.305 0.206
0.06
000 50 75 00 25
R-26 R-27 R-28 R-29 R-30
0.63 0.438 0.438 0.63 0.500 0.69 0.313 0.438 0.63
0.69 0.69 0.75 0.56 0.69
0.305 0.305 0.341 0.206 0.305
0.06 0.06 0.06 0.06 0.06
75
R-31
0.438 0.63 0.500 0.69 0.313 0.50 0.438 0.63 0.63 0.438
0.69 0.75 0.06 0.56 0.06 0.69 0.06 0.69 0.06
0.305 0.341 0.206 0.305 0.305
0.06
88 75
R-32 R-33
R-34 R-35
5.000 5.188
O. 50
0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06
(continued)
4
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
GASKETS METALLIC
ASME 816.20-1998
FOR PIPE FLANGES
TABLE 3 TYPE R RING GASKET DIMENSIONS AND TOLERANCES (CONT'D) Ring Number
Average Pitch Diameter of Ring, P
Height of Ring
on Width of FlatRadius Octagonal Ring,
Width of Ring, A
Oval,
Octagonal,
B
H
c
in Octagonal Ring, R,
R-36 R-37 R-38 R-39 R-40
5.875 5.875 6.188 6.375 6.750
0.31 3 0.438 0.625 0.438 0.313
0.56 0.69 0.88 0.69 0.56
0.50 0.63 0.81 0.63 0.50
0.206 0.305 0.413 0.305 0.206
0.06 0.06 0.06 0.06 0.06
R-41 U-42 u-43 u-44 u-45
7.125 7.500 7.625 7.625 8.313
0.438 0.750 0.313 0.438 0.438
0.69 1.o0 0.56 0.69 0.69
0.63 0.94 0.50 0.63 0.63
0.305 0.485 0.206 0.305 0.305
0.06 0.06 0.06 0.06 0.06
R-46 R-47 R-48 R-49 R-50
8.313 9.000 9.750 10.625 10.625
0.500 0.750 0.3 13 0.438 0.625
0.75 1.o0 0.56 0.69 0.88
0.69 0.94 0.50 0.63 0.81
0.341 0.485 0.206 0.305 0.413
0.06 0.06 0.06 0.06 0.06
R-51 R-52 u-53 R-54 R-55
11 .o00 12.000 12.750 12.750 13.500
0.875 0.313 0.438 0.625 1.125
1.13 0.56 0.69 0.88 1.44
1.O6 0.50 0.63 0.81 1.38
0.583 0.206 0.305 0.413 0.780
0.06 0.06 0.06 0.06 0.09
R-56 R-57 R-58 R-59 R-60
15.000 15.000 15.000 15.625 16.000
0.313 0.438 0.875 0.3 13 1.250
0.56 0.69 1.13 0.56 1.56
0.50 0.63 1.06 0.50 1.50
0.206 0.305 0.583 0.206 0.879
0.06 0.06 0.06 0.06 0.09
R-61 R-62 R-63 R-64 R-65
16.500 16.500 16.500 17.875 18.500
0.438 0.625 1.o00 0.313 0.438
0.69 0.88 1.31 0.56 0.69
0.63 0.81 1.25 O. 50 0.63
0.305 0.413 0.681 0.206 0.305
0.06 0.06 0.09 0.06 0.06
R-66 R-67 R-68 R-69 R-70
18.500 18.500 20.375 21.000 2 1.o00
0.625 1.125 0.313 0.438 0.750
0.88 1.44 0.56 0.69 1.o0
0.81 1.38 0.50 0.63 0.94
0.413 0.780 0.206 0.305 0.485
0.06 0.09 0.06 0.06 0.06
R-7 1 R-72 R-73 u-74 R-75
2 1 .o00 22.000 23.000 23.000 23.000
1.125 0.3 13 0.500 0.750 1.250
1.44 0.56 0.75 1.o0 1.56
1.38 0.50 0.69 0.94 1.50
0.780 0.206 0.341 0.485 0.879
0.09 0.06 0.06 0.06 0.09
U-76 R-77 R-78 R-79 R-80
26.500 27.250 27.250 27.250 24.250
0.313 0.625 1.o00 1.375 0.313
0.56 0.88 1.31 1.75
0.50 0.81 1.25 1.63 0.50
0.206 0.413 0.681 0.977 0.206
0.06 0.06 0.09 0.09 0.06
...
(continued)
5
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
LLIC 816.20-1998
ASME
PIPE
FOR
FLANGES
TABLE 3 TYPE R RING GASKET DIMENSIONS AND TOLERANCES (CONT'D) Height of Ring Oval,
Octagonal, Octagonal
Width of Flat on Ring,
B
H
C
Average Diameter Width PitchRing Number
00
500 500 750
000 000 250
of of Ring, P
Ring, A
Radius in Octagonal Ring, RI
R-81 R-82 R-84 R-85
0.563 0.438 0.438 0.500
0.377... 0.305 0.305 0.341 ...
0.75 0.63 0.63 0.69
0.06 0.06 0.06 0.06
R-86 R-87 R-88 R-89 R-90
0.625 0.625 0.750 0.750 0.875
0.413 0.413 . . . 0.485. . . 0.485
...
...
0.81 0.81 0.94 0.94 1.O6
0.06 0.06 0.06 0.06
...
1.50
R-9 1 R-92 R-93 R-94 R-95
10.250
... ...
...
1.250 0.63 0.438 0.750 0.750 0.750
R-96 R-97 R-98 R-99 R-I00
29.500
0.875 0.875 0.875 0.438 1.125
R-101 R-I02 R-103 R-104 R-105
31.500 33.750 36.000 38.000 40.250
1.250 1.250 1.250 1.375 1.375
0.06
0.879 0.305 0.485 0.485 0.485
0.09 0.06 0.06 0.06 0.06
1.O6 1.O6 1.O6 0.63 1.38
0.583 0.583 0.583
0.06 0.06 0.06 0.06 0.09
1.50 1.50 1.50 1.63 1.63
0.879 0.879 0.879 0.977 0.977
0.09 0.09 0.09 0.09 0.09
0.69
... ...
... ...
... ... 0.305. . . 0.780 . . .
GENERAL NOTE: All dimensions are in inches. TOLERANCES: P = average pitch diameter of ring, k0.007 A = width of ring, 20.008 B, H = height of ring, +0.05, -0.02 Variation in height throughout the entire tolerances. C = width of flat on octagonal ring, k0.008 R,. = radius in ring, 20.02 23 deg = angle, kv2deg
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
0.583
..* ... ... ... ...
0.94 0.94 0.94
circumference of any given ring shall not
exceed 0.02 within these
METALLIC GASKETS FOR PIPE FLANGES
TABLE 4 PIPE SIZES FORTYPE R RING GASKETS SUITABLE FOR REFERENCED STANDARDS Pressure Classes Ring Number
R-1 1 R-12 R-13 R-14 R-15 R-16 R-17 R-18 R-19 R-20 R-21 R-22 R-23 R-24 R-25 R-26 R-27 R-28 R-29 R-30 (2) R-31 R-32 R-33 R-34
150
300-600
... ... ...
...
... 1
... 1'/4
... 1v 2
...
...
'12
3
14
...
720-960 (1)
2000
3000
5OOO
150
300-600
900
...
...
...
...
...
... ...
...
... ...
... ...
...
... ... ...
... ...
... ...
.., ... ... ...
... ... ... ...
li2
...
3
14
1 12
... 3
14
1
1
1
...
...
...
1'/4
1'/4
1'/4
1'/2
...
1'/z
...
1Y2
2
...
... ...
... ...
...
2
...
... ... ...
2
2
2v 2
... ...
...
... 2Y2
...
... ...
3
... ... ... 3
... ...
... ...
... ...
R-37 R-38 R-39
...
...
R-40
5
R-4 1 R-42 R-43 R-44 R-45 R-46
...
5
...
...
6
... ...
...
... ...
4
...
... ...
3
... ...
... ... ... 4
... ... ... 5
... ...
...
... 5; ... '/4
... 1
... ... 1Y4
...
1/'2
...
...
1
1
1
1
...
...
...
...
1'/4
1'/4
1y4
...
15;
...
... 2
..,
2
2'/z
2'4
...
...
... 11 4
... ... 2
...
... 25i
... ...
... ...
...
...
... ...
... 3
3
3
...
...
...
...
...
3
...
...
... ...
...
...
...
... ...
... ... ...
...
...
... 4
4
...
... ...
...
...
...
...
5
...
... ...
...
4
...
... ... 5
... ... ...
... ...
4
...
... ... 5
...
1'/2
... ... ... 2
...
... 21/2
3
... ... ... ... ... 4
...
...
...
...
...
8
8
...
a
...
...
... ... ...
...
... ...
10
10
...
...
10
...
...
10
10
...
...
...
... ..* 10
... ... ...
... . . I
6
... 6
... ...
... ...
...
8
8
...
...
...
...
... ... ...
...
... ... ...
... ... ...
... ...
...
...
... ...
... ...
... ...
... ... ...
...
... ... ... ...
8
...
...
10
...
... ...
...
10
...
...
.f.
... ... ... ... ...
...
... ...
...
... ... ... ...
... ... ... ...
4
...
...
... ... ...
...
...
...
...
3'4
...
5
6
... ... ...
3
...
...
...
...
...
...
...
... ... ...
...
...
...
...
6
...
... ... ...
...
... ...
...
... ...
214
5
...
a
... ...
...
... ...
8
2
...
...
...
...
... ...
6
...
... ...
... ...
...
6
...
15;
...
...
...
6
...
...
...
...
11/4
...
...
6
...
... ... ...
,.. ... *..
...
5 ...
8
... ...
21/2
3 3
...
...
2%
...
4
...
...
... ... ...
...
...
... ...
R-35 R-36
R-51 R-52 R-53 R-54
2500
...
3'/2
R-50
1500
...
...
ASME 816.47 Series A
900
...
...
R-47 13-48 R-49
API 6 8
ASME 616.5
...
...
...
...
... ...
... ... ...
... ... .
I
.
...
...
... ...
... ... ...
...
...
... ... ... ...
... ... ...
...
...
... ... ... ...
... ... ... ...
... ... ...
... ...
...
...
...
...
... ...
...
... ...
...
(continued)
7
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
STD-ASME BLb*E!U-ENGL
METALLIC GASKETS FOR PIPE FLANGES
TABLE 4 PIPE SIZES FOR TYPE R RING GASKETS SUITABLE FOR REFERENCED STANDARDS (CONT'D) Pressure Classes Ring ' Number R-55 R-56 R-57 R-58 R-59 R-60 R-61 R-62 R-63 R-64 R-65 R-66 R-67 R-68 R-69 R-70 R-71 R-72 R-73 R-74 R-75 R-76 R-77 R-78 R-79 R-80 R-81 R-82 R-a4 R-85 R-86 R-a7 R-88 R-a9 R-90 R-91 R-92 R-93 R-94 R-95
ASME B16.5
6B
ASME 616.47 Series A
API
150
300-600
900
1500
2500
720-960 (1)
2000
3000
...
... ...
...
... ...
10
...
...
...
...
... ...
...
...
12
12
12
...
...
...
...
...
12
...
12 12 ...
12
...
...
...
14
... ...
...
14
...
... ... ... ... 16
la
...
... 18
...
... ... ...
20
...
...
...
14
_..
...
14
...
...
...
... ...
...
... ... ...
... ...
16
16
... ... ... ... 16
...
...
...
...
... 16
...
16
. . .. . . . . . ... ... 18 ... ...
24
...
... ...
24
...
...
...
...
24
...
...
... 24
... ... ... . . . . . .
... ...
...
...
...... ...
... ... ... ... ...
... ... ... . . . ... . . . ... ... ... ... ... ...
...
...
... ... ...
... ...
... ...
...
... ... ... ... ... ... ...
... ...
... ...
...
la
...... ... 20 ... ... 20 ... ...
...
...
...
...
20
...
...
...
... ...
*.. ...
...
... ...
...
... ...
...
... ...
...
... ... ...
14
... 14
...
18
18
...
...
...
20
20
...
...
...
... ...
... ... ...
...
...
... ... ...
... ... ...
...
... ...
... ... ... ...
... ... ...
... ... ... ...
... ... ...
... ... ...
... ...
... ...
... ...
...
... ... ...
... ...
...
...
... ...
...
...
...
... ...
... ...
... ...
... 16
...
300-600
...
...
... la
... ... 20
...
...
...
14
...
...
12
...... ...
150
10000 (1)
... ...
... ...
...
...
... ... ... . . .... ... ...
... ... ... ... ... ... ... ... 1
...
...
... ... ... ...
...
...... ...
... ... ... ... ... ...
... ...
...
.. ... ... ... 22
... ...
12
...
... 14
...
... ... 16
...
... ... la
900
... ... 12 ... ... ... ... 14
... ...
... 16
... ... ... 18
...
... 20
... ...
24
...
... ... 20
...
... ...
... ...
24
22
...
... ...
... ...
1Y2 ... 2 2'/2 3 4
... ...
...
...
...
3v2
... ... ... ...
... ...
...
...
...
...
26 2a 30
5 10
...
... ... ...
... ...
...
... ...
...
... ...
...
...
...
... ...
...
(continued)
8
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
METALLIC GASKETS FOR PIPE FLANGES
ASME 816.20-1998
TABLE 4 PIPE SIZES FOR TYPE R RING GASKETS SUITABLE FOR REFERENCED STANDARDS (CONT'D) Pressure Classes Ring Number
API 6B
ASME B16.5
150
300-600
900
R-96 R-97 R-98 R-99 R-I00 R-101
... ... ...
... ...
...
R-102 R-I03 R-IO4 R-105
... ...
. . .. . .
...
...
...
...
...
...
...
...
... ...
... ... ... ... ..
... ...
... . .... . ...
... ...
1500
... ... ... ... ... ... ... ... ...
816.47
ASME
Series A
2500
720-960 (1)
2000
3000
10000 (11
150
300-600
900
...
... ... ... ...
...
..*
32 34 36
...
... ... ...
...
... ... 8
...
...
.. . . ... ...
...
...
...
... ... ...
...
...
...
...
... ...
...
...
...
...
... ... ...
8
... .... . . ... ... ... ...
... ... ... ... ... ...
...
... ... ...
... ... ... ...
... ... ... ...
... ...
... 26 28 30 32 34 36
GENERAL NOTE: End flanges to API 6D and API 600 use gaskets for equivalent pipe size under ASME B16.5 or ASME B16.47 series A. NOTES: (1) Class 720, 960, and 10000 flanges to API 6B are obsolete. Data are for information only. (2) R-30 is for lapped joint only.
9
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
ASME B16.20-1998
FOR PIPE FLANGES
METALLIC GASKETS 23 deg
TABLE 5 TYPE RX RING GASKET DIMENSIONS AND TOLERANCES Ring Number
4 3.000 RX-20 9 3.672 RX-23 0.167 0.254RX-24 0.469 0.182 RX-25 0.344 0.254 RX-26 0.469
031 2
656
Outside Diameter of Ring,
OD
Width of Ring, A
Width of Flat,
Height of Outside Bevel,
C
D
0.06 O. 182 0.750 4.172 4.313 4.406
O. 125 O. 167
1
Height of Ring, H
Radius of Size, Ring,
Hole
S
E (1)
... 1.o00 1.o00 0.750
O. 167
.o00
0.06 0.06 0.06 0.06
RX-27 RX-31 RX-35 RX-37 RX-39
4.656 5.297 5.797 6.297 6.797
0.469 0.469 0.469 0.469 0.469
0.254 0.254 0.254 0.254 0.254
O. 167 O. 167 0.167 O. 167 O. 167
1.o00 1.o00 1.o00 1.o00 1.o00
0.06 0.06 0.06 0.06 0.06
RX-41 RX-44 RX-45 RX-46 RX-47
7.547 8.047 8.734 8.750 9.656
0.469 0.469 0.469 0.531 0.781
0.254 0.254 0.254 0.263 0.407
O. 167 O. 167 O. 167 0.188 0.271
1.o00 1.000 1.o00 1.125 1.625
0.06 0.06 0.06 0.06 0.09
RX-49 RX-50 RX-53 RX-54 RX-57
11.O47 11.156 13.172 13.28 1 15.422
0.469 0.656 0.469 0.656 0.469
0.254 0.335 0.254 0.335 0.254
O. 167 0.208 O. 167 0.208 O. 167
1.o00 1.250 1.o00 1.250 1.o00
0.06 0.06 0.06 0.06 0.06
RX-63 RX-65 RX-66 RX-69 RX-70
17.391 18.922 0.254 0.335 1.422 0.254 0.407
0.333 O. 167 0.208 1 O. 167 0.271
2.000 .o00
0.09 0.06
.o00
0.06
0.582 1.O63 0.469 0.656 0.06 0.469 0.781 0.09
1 1.250 1.625
...
...
... ...
...
... ...
...
...
... ... ...
...
...
... ... ...
...
... ...
... ... ...
(continued)
10
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
METALLlC 816.20-1998 GASKETSASME FOR PtPE FLANGES
TABLE 5 TYPE RX RING GASKET DIMENSIONS AND TOLERANCES (CONT'D) Height of Ring,
Radius of Ring,
H
RI
Hole size, E (11
Ring Number
Outside Diameter of Ring, OD
Width of Ring,
Width of Flat,
A
C
RX-73 RX-74
23.469 23.656
0.531 0.781
0.263 0.407
0.208 0.271
1.250 1.625
0.06 0.09
... ...
RX-82 ~x-84 RX-85
2.672 2.922 3.547
0.469 0.469 0.531
0.254 0.254 0.263
0.167 O. 167 0.167
1.o00 1.o00 1.O00
0.06 0.06 0.06
0.06 0.06 0.06
RX-86 RX-87 RX-88 RX-89 RX-90
4.078 4.453 5.484 5.109 6.875
0.594 0.594 0.688 0.719 0.781
0.335 0.335 0.407 0.407 0.479
0.188 0.188 0.208 0.208 0.292
1.125 1.125 1.250 1.250 1.750
0.06 0.06 0.06 0.06 0.09
0.09 0.09 0.12 0.12 0.12
11.297 9.672 2.026 2.453 3.844 5.547
1.188 0.469 0.226 0.219 0.375 0.469
0.780 0.254 O. 126 0.120 0.213 0.210
0.297 0.167 0.057 0.072 0.125 0.167
1.781 1.o00 0.445 0.437 O .7 50 1.000
0.09 0.06 0.02 0.02 0.03 0.06
0.12
RX-91 RX-99 RX-201 RX-205 RX-210 RX-2 15
Height of Outside Bevel, D
(2) (2) (2)
..
(3) (3) (3) (3)
... ...
...
GENERAL NOTE All dimensions are in inches. NOTES: (1) Rings RX-82 through RX-91 only require one pressure passage hole as illustrated. The centerline of the hole shall be located at the midpoint of dimension C. (2) Tolerance on these dimensions is +O, -0.015. (3) Tolerance on these dimensions is +O.OZ, -0. TOLERANCES: OD = outside diameter of ring, +O.OZO. -0 A = width of ring, +0.008, -0 Variation in width throughout the entirecircumference of any ring shall not exceed 0.004 within these tolerances. C = width of flat, +0.006, -0 D = height of outside bevel, +O, -0.03 H = height of ring, +0.008, -0 Variation in height throughout the entire circumference of any ring shall not exceed 0.004 within these tolerances. R, = radius of ring, 20.02 23 dag = angle, A?; deg E = hole size, +_0.02
II
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
METALLIC GASKETS
ASME 616.20-1998
FOR
TABLE 6 PIPE SIZES FOR TYPE RX RING GASKETS SUITABLE FOR REFERENCED STANDARDS Pressure Classes
API 68 Ring Number RX-20 RX-23 RX-24 RX-25 RX-26 RX-27 RX-31 RX-35 RX-37 RX-39 RX-41 RX-44 RX-45 RX-46 RX-47 RX-49 RX-50 RX-53 RX-54 RX-57 RX-63 RX-65 RX-66 RX-69 RX-70
18
20
RX-73 RX-74 RX-82 RX-84 RX-85 RX-86 RX-87 RX-88 RX-89 RX-90
15
RX-91 RX-99 (2) RX-201 RX-205 ... RX-210 RX-2
720-960 2000 (1I 1'/z 2
...
2900 Il)
... ...
...
...
3000
5000
1'/2
1v 2
2
2 378
...
...
... ...
2'/2
...
272
3
... ...
3
...
...
4
...
4
...
... ...
...
5
...
6
...
...
...
...
...
... ...
8
...
... 10
... 12
... 16
... ...
... ... ... ... ...
...
... ... ... ...
... ... ... ... ... ... ... ... ... ... ...
... 5
... 6
...
(2)...
5
... 6 8
10
...
12
...
... ...
... 16
...
8
10
14
... ... ...
...
... ...
20
...
... ...
...
18
1 15; 2
...
2% 3 4 3'/2 5
...
...
... ... ...
...
... ...
...
... ...
...
...
...
8 (2)
...
... ...
...
...
...
...
10
...
4
8
...
... ...
8
3
...
... ...
...
...
v*
1 1Y 1 6 2%6 4%s
NOTES: (1) Class 720, 960, and 2900 flanges to API 66 are obsolete. Data are for information only. (2) Crossover flange ,connection.
12
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
PIPE FLANGES
METALLIC GASKETS FOR PIPE FLANGES
ASME 616.20-1998
TABLE 7 TYPE BX RING GASKET DIMENSIONS AND TOLERANCES Outside Diameter of Flat, ODT
Width ofSize, Flat,
Hole
c
D (1)
0.488
2.790 2.954 3.277 3.910 4.531
0.314 0.325 0.346 0.385 0.419
0.06 0.06 0.06 0.06 0.06
0.560 0.733 0.826 0.91 1 1.012
0.560 0.733 0.826 0.91 1 1.012
5.746 9.263 11.476 13.731 16.657
0.481 0.629 0.709 0.782 0.869
0.06 0.12 0.12 0.12 0.12
15.850 19.347 18.720 2 1.896 22.463
0.938 1.105 0.560 1.185 1.185
0.541 O. 638 0.560 0.684 0.968
15.717 19.191 18.641 21.728 22.295
0.408 0.482 0.481 0.516 0.800
0.12 0.12 0.06 0.12 0.12
BX-165 BX-166 BX-167 EX-168 BX-169
24.595 25.198 29.896 30.128 6.831
1.261 1.261 1.412 1.412 0.624
0.728 1.O29 0.516 0.632 0.509
24.417 25.020 29.696 29.928 6.743
0.550 0.851 0.316 0.432 0.421
0.12 0.12 0.06 0.06 0.06
BX-170 BX-17 1 BX-172 BX-303
8.584 10.529 13.113 33.573
0.560 0.560 0.560 1.494
0.560 0.560 0.560 0.668
8.505 10.450 13.034 33.361
0.481 0.481 0.481 0.457
0.06 0.06 0.06 0.06
Outside Diameter of Ring, OD
Height of Ring, H
Width of Ring,
2.842 3.008 3.334 3.974 4.600
0.366 0.379 0.403
0.366 0.379 0.403
0.448
0.448
0.488
BX-155 BX-I56 BX-157 BX-158 BX-159
5.825 9.367 11.593 13.860 16.800
BX-160 EX-161 BX- 62 1 BX-163 BX-164
Nominal Ring Number BX-1 50 BX-151 BX-152 BX-153 BX-154
Size, in.
GENERAL NOTES: (a) All dimensions are in inches. (b) Radius R shall be 8% to 12% of the gasket height
A
H. (continued)
13
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
ASME 616.20-1998
METALLIC GASKETS FOR PIPE FLANGES
NOTES TO TABLE 7 (CONT'D) NOTE: (1) One pressure passage hole is required per gasket as illustrated. The center line of the hole shall be located at the midpoint of dimension C. TOLERANCES: OD = (outside diameter of ring) +O, -0.005 H = (height of ring) +0.008,-0 Variation in height throughout the entire circumference of any ring shall not exceed 0.004 within these tolerances. A = (width of ring) +0.008,-0 Variation in width throughout theentire circumference of any ring shall notexceed 0.004 within these tolerances. ODT = (outside diameter of flat) k0.002 C = (width of flat) +0.006,-0 D = (hole size) 20.02 R = (radius of ring) see General Note (b) 23 deg = (angle) deg
+v4
TABLE 8 PIPE SIZES FOR TYPE BX
RING GASKETS SUITABLE FOR REFERENCED STANDARDS Pressure Classes API 6BX
Ring Number BX-150 BX-151 BX-152 BX-153 BX-154 BX-155 BX-156 BX-157 BX-158 ...BX-159 BX-160 %X-161 BX-162 BX-163 . .BX-164 . BX-165 BX-166 BX-167 %X-168 %X-169 %X-170 BX-171 BX-172 BX-303
2000
3000
S000
10000
...
...
...
... ... ...
...
...
1 V16 113/16 2'11 6 29/16 31/16
...
... ... ... ...
... ... ...
... ...
...
...1378 ...
...
...
...
...
... ...
...
26'/4
...
... ... 30
... ... ...
... *..
1378
... ... ...
... ... ...
...
...
...
...
26'/4
...
1378 1674 1674 1S3/4 1874
...
21v 4
... ...
...
...
... ...
...
30
...
...
...
...
14
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
'
...
2916 3716
4 '11 6 71 ' 16 9 11 13'/8
... ... 1674
15000 1'Yl6 I'Yl6 2 % ~ 29/16 3'/16
...
...
...
... 1874
... ...
5
Y*
65/8 8%6 11'/32
...
1"4 8 2%6
4%6 7716 9 11
18%
...
...
4%6 7 '11 6 9 11
...
2 1/4'
20000
...
... ... ... ...
...
...
...
... ... ... ... ... ... ... ...
B16.20-1998
I.5
ASME PIPE FLANGES FOR GASKETS METALLIC
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
18.00 20.50 22.50 26.75
16.63 18,69 20.69 24.75
7.19 9.19 11.31 13.38 14.63
2.75 3.25 4.00 5.00 6.13
0.75 1 .oo 1.25 1.88 2.13
150
16.63 18.69 20.69 24.75
7.19 9.19 11.31 13.38 14.63
2.75 3.25 4.00 5.00 6.13
0.75 1.00 1.25 1.88 2.13
300
16.25 18.50 20.50 24.75
6.88 8.88 10.81 12.88 14.25
.. .. .. 4.75 5.81
. .. . .. ..
16.25 18-50 20.50 24.75
6.88 8.88 10.81 12.88 14.25
2.75 3.25 4.00 4.75 5.81
0.75 1.00 1.25 1.88 2.13
600
Diameter
16.25 18.25 20.50 24.75
6.88 8.75 10.88 12.75 14.00
3.75 4.75 5.81
. ..
I..
...
..
16.00 18.25 20.25 24.25
6.75 8.50 10.50 12.75 14.25
2.31 2.75 3.63 4.63 5.63
0.75 1.00 1.25 1.56 1.88
1500 (1)
(3)
2,31 2.75 3.63 4.63 5.63
0.75 1.00 1.25 1.56 1.88
(1, 5)
. .. .. . ___ . ..
20.25 21.63 23.88 28.25
8.75 11.00 13.38 16.13 17.75
4.13 4.88 5.38 6.88 7.75
1.88 2.25 2.63 3.00 3.38
150
21.25 23.50 25.75 30.50
9.88 12.13 14.25 16.63 19.13
4.38 5.13 5.88 7.13 8.50
2.13 2.63 2.88 3.25 3.75
300
Outside
21.13 23.38 25.50 30.25
9.75 12.00 14.13 16.50 19.00
. 7.00 8.38
. .
. _._ .,. . . . .
400 (5)
Diameter
22.25 24.13 26.88 31.13
10.50 12.63 15.75 18.00 19.38
4.38 5.13 5.88 7.63 9.50
2.13 2.63 2.88 3.25 3.75
600
of Centering
USED WITH ASME B16.5 FLANGES
6.75 8.50 10.63 12.50 .. .
2500
GASKETS
by Class
900 (1, 5)
of Gasket
FOR SPIRAL-WOUND
400 (51
Inside
DIMENSIONS
22.63 25.13 27.50 33.00
11.38 14.13 17.13 19.63 20.50
. .. 6.63 8.13 9.75
. ..
SOO(5)
Ring
25.25 27.75 29.75 35.50
11.13 13.88 17.13 20.50 22.75
5.63 6.50 6.88 8.25 10.00
2.50 2.75 3.13 3.50 3.88
1500
by Class
,.. ,.. .. . .. .
12.50 15.25 18.75 21.63
5.75 6.63 7.75 9.25 11 .oo
2.75 3.00 3.38 4.13 4.63
2500(5)
(4)
GENERAL NOTES: (a) For reference, see Table 9 illustration beginning on previous page. (b) The gasket-thickness tolerance is iO.005 in. measured across the metallic portion of the gasket not including the filler, which may protrude slightly beyond the metal. (c) For limitations on the maximum flange bore for use with these spiral-wound gaskets, see Table 16. NOTES: (II Inner rings are required for all PTFE filled gaskets and for Class 900 gaskets, NPS 24; Class 1500 gaskets, NPS 12 through NPS 24; and Class 2500 gaskets, NPS 4 through NPS 12 (see para. 3.2.5 and Table 12). (2) The gasket outside diameter tolerance for NPS ‘/2 through NPS 8 is r0.03 in.; for NPS 10 through NPS 24, +0.06 in., -0.03 in. (3) The gasket inside diameter tolerance for NPS 5; through NPS 8 is iO.016 in.; for NPS 10 through NPS 24, kO.03 in. (4) The centering ring outside diameter tolerance is 20.03 in. (5) There are no Class 400 flanges in NPS 1/Z through NPS 3 (use Class 8001, Class 900 flanges in NPS ‘/* through NPS 2’/* (use Class 1500), or Class 2500 flanges NPS 14 and larger.
18.25 20.75 22.75 27.00
16 18 20 24
8.25 10.13 12.25 14.50 15.75
3.38 3.88 4.75 5.88 7.00
3.38 3.88 4.75 5.88 7.00
8.25 10.38 12.50 14.75 16.00
1.25 1.56 1.88 2.38 2.75
1.25 1.56 1.88 2.38 2.75
of
Classes 900, 1500, 2500
Diameter Gasket (2)
Classes 150, 300. 400.600
6 8 10 12 14
Flange Size W’S)
Outside
TABLE 9
i
B 9 4
f?
s
W
R 5
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services 0.117
in. thick r
Centering
TABLE 10 ILLUSTRATION
in.4131 I ring
Centering
ring
outside
(l)l, in. thick
diameter
[Note -0.131
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
00
26.50 28.50 30.50 32.60 34.50 36.50
38.50 40.50 42.50 44.50 46.50 48.50
50.50 52.50 54.50 56.50 58.50 60.50
26 28 30 32 34 36
38 40 42 44 46 48
50 52 54 56 58 60
52.50 54.50 56.50 58.50 60.50 62.50
40.13 42.13 44.25 46.38 48.38 50.38
27.75 29.75 31.75 33.88 35.88 38.13
Outside Diameter (3)
150
56.50 58.75 61 .OO 63.25 65.50 67.50
43.75 45.75 48.00 50.25 52.25 54.50
30.50 32.75 34.75 37.00 39.00 41.25
Centering Ring Outside Diameter (4)
51 .oo 53.00 55.25 57.25 59.50 61.50
38.50 40.25 42.25 44.50 46.38 48.63
27.00 29.00 31.25 33.50 35.50 37.63
Class
53.00 55.00 57.25 59.25 61.50 63.50
40.00 42.13 44.13 46.50 48.38 50.63
29.00 31 .oo 33.25 35.50 37.50 39.63
Outside Diameter (3)
300
54.25 56.25 58.75 60.75 62.75 64.75
41.50 43.88 45.88 48.00 50.13 52.13
32.88 35.38 37.50 39.63 41.63 44.00
Centering Ring Outside Diameter (4)
FOR SPIRAL-WOUND
Gasket
12)
Inside Diameter
DIMENSIONS
40.25 42.38 44.38 46.50 49.00 51.00 53.00 55.00 57.25 59.25 61.25 63.75
51.00 53.00 55.25 57.25 59.25 61.75
29.00 31 .oo 33.25 35.50 37.50 39.63
Outside Diameter (3)
55.25 57.25 59.75 61.75 63.75 66.25
42.25 44.38 46.38 48.50 50.75 53.00
32.75 35.13 37.25 39.50 41.50 44.00
Centering Ring Outside Diameter (4)
52.00 54.00 56.25 58.25 60.50 62.75
39.00 41.25 43.50 45.75 47.75 50.00
27.00 29.00 31.25 33.50 35.50 37.63
(2)
Inside Diameter
600
54.00 56.00 58.25 60.25 62.50 64.75
41.00 43.25 45.50 47.75 49.75 52.00
29.00 31.00 33.25 35.50 37.50 39.63
Outside Diameter (3)
Gasket
Class
57.00 59.00 61.25 63.50 65.50 60.25
43.50 45.50 48.00 50.00 52.25 54.75
34.13 36.00 38.25 40.25 42.25 44.50
Centering Ring Outside Diameter (4)
slightly
... *. . ... . .. ... ..,
40.75 43.25 45.25 47.50 50.00 52.00
27.00 29.00 31.25 33.50 35.50 37.75
Inside Diameter (2,5)
900 (11
beyond
the metal.
.*I ... ... .. ... .. .
47.25 49.25 51.25 53.88 56.50 58.50
42.75 45.25 47.25 49.50 52.00 54.00 ... ... .. . ... , .. . ..
34.75 37.25 39.75 42.25 44.75 47.25
Centering Ring Outside Diameter (4. 5) 29.00 31.00 33.25 35.50 37.50 39.75
Outside Diameter (3,5)
Gasket
Class
USED WITH ASME B16.47 SERIES A FLANGES 400
38.25 40.38 42.38 44.50 47.00 49.00
27.00 29.00 31.25 33.50 35.50 37.63
(2)
inside Diameter
Gasket
Class
GASKETS
GENERAL NOTES: (a) For reference, see Table 10 illustration beginning on previous page. ib) The gasket-thickness tolerance is kO.005 in. measured across the metallic portion of the gasket not including the filler, which may protrude (c) For limitations on the maximum flange bore for use with these spiral-wound gaskets, see Table 17. id) ASME 616.47 Series A flanges NPS 12 through NPS.24 have the same raised face dimensions as ASME B16.5 flanges. NOTES: (1) Inner rings are required for all PTFE gaskets and Class 900 gaskets, NPS 26 through NPS 48 (see para. 3.2.5 and Table 13). (2) The gasket inside diameter tolerance for NPS 26 through NPS 34 is iO.03 in., and the tolerance for NPS 36 through NPS 60 is kO.05 in. (3) The gasket outside diameter tolerance for NPS 26 through NPS 60 is iO.06 in, (4) The centering ring outside diameter tolerance is iO.03 in. (5) There are no Class 980 flanges NPS 50 and larger.
(2)
Inside Diameter
Flange Sire W’S)
Gasket
Class
TABLE 10
5 tn
5
B s 3
R I?! ;:
? F 5 G,
3E
52 a ii 1. 8
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services 0.117
TABLE
I
in.-0.131 r
Centering
11 ILLUSTRATION
in. thick ring
Centering
ring
outside
(1)1, in. thick
diameter
[Note -0.131
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
26.50 28.50 30.50 32.50 34.50 36.50
38.37 40.25 42.50 44.25 46.50 48.50
50.50 52.50 64.50 56.88 59.07 61.31
26 28 30 32 34 36
38 40 42 44 46 48
50 52 54 56 58 60
52.19 54.19 56.00 58.18 60.19 62.44
39.75 41.88 43.88 45.88 48.19 50.00
27.50 29.50 31.50 33.50 35.75 37.75
Outside Diameter (3)
150
53.44 55.44 57.63 59.63 62.19 64.19
41.13 43.13 45.13 47.13 49.44 51.44
28.56 30.56 32.56 34.69 36.81 38.88
Centering Rina Outside Diameter (4)
Class
53.38 55.38 57.25 60.66 61.94 64.19
41.25 43.25 45.25 47.25 49.38 51.63
28.00 30.00 32.00 34.00 36.00 38.00
Outside Diameter (3)
300
55.88 57.88 60.25 62.75 65.19 67.19
43.25 45.25 47.25 49.25 51.88 53.88
30.38 32.50 34.88 37.00 39.13 41.25
Centering Rina Outside Diameter (41
FOR SPIRAL-WOUND
Gasket
51 .a8 53.88 55.25 58.25 60.44 62.56
39.75 41.75 43.75 45.75 47.88 49.75
26.50 28.50 30.50 32.50 34.50 36.50
Inside Diameter (21
DIMENSIONS
51.00 53.00 55.25 57.25 59.25 61.75
38.25 40.38 42.38 44.50 47.00 49.00
26.25 28.13 30.13 32.00 34.13 36.13
Inside Diameter (2)
53.00 55.00 57.25 59.25 61.25 63.75
40.25 42.38 44.38 46.50 49.00 51.00
27.50 29.50 31.75 33.88 35.88 38.00
55.25 57.25 59.75 61.75 63.75 66.25
42.25 44.38 46.38 48.50 50.75 53.00
29.38 31.50 33.75 35.88 37.88 40.25
Centering Ring Outside Diameter (4)
52.00 54.00 56.25 58.25 60.50 62.75
39.00 41.25 43.50 45.75 47.75 50.00
26.13 27.75 30.63 32.75 35.00 37.00
Inside Diameter (2)
600
54.00 56.00 58.25 60.25 62.50 64.75
41 .a0 43.25 45.50 47.75 49.75 52.00
28.13 29.75 32.63 34.75 37.00 39.00
Outside Diameter (3)
Gasket
Class
57.00 59.00 61.25 63.50 65.50 68.25
43.50 45.50 48.00 50.00 52.25 54.75
30.13 32.25 34.63 36.75 39.25 41.25
Centering Rins Outside Diameter (4)
. . . .
beyond
:: :
slightly
:::
::: .. .
. . . .
42.75 45.25 47.25 49.50 52.00 54.00
29.50 31.50 33.75 36.00 38.25 39.25
Outside Diameter 13.51
900 (1)
. . . .
..
40.75 43.25 45.25 47.50 50.00 52.00
27.25 29.25 31.75 34.00 36.25 37.25
Inside Diameter (2.5)
Gasket
Class
USED WITH ASME 616.47 SERtES 6 FLANGES 400
Outside Diameter (3)
Gasket
Class
GASKETS
GENERAL NOTES: (a) For reference, see Table 11 illustration beginning on previous page. (b) The gasket-thickness tolerance is to.005 in. measured across the metallic portion of the gasket not including the filler, which may protrude (c) For limitations on the maximum flange bore for use with these spiral-wound gaskets, see Table 18. NOTES: (I) Inner rings are required for all PTFE gaskets and for Class 900 gaskets, NPS 26 through NPS 48 (see para. 3.2.5 and Table 14). (2) The gasket inside diameter tolerance for NPS 26 through NPS 34 is kO.03 in., and the tolerance for NPS 36 through NPS 60 is 20.05 in. (3) The gasket outside diameter tolerance for NPS 26 through Nf?S 60 is ho.06 in. (4) The centering ring outside diameter tolerance is iO.03 in. (5) There are no Class 906 flanges NPS 50 and larger.
Inside Diameter (2)
Flange Size (NPS)
Gasket
Class
TABLE 11
the metal.
:::
,*. ... ,.. ...
47.25 49.25 51.25 53.88 56.50 58.50
33.00 35.50 37.75 40.00 42.25 44.25
Centering Rina Outside Diameter (4.51
METALLIC GASKETS FOR PIPE FLANGES
ASME 616.20-1998
TABLE 12 INNER-RING INSIDE DIAMETERS FOR SPIRAL-WOUND GASKETS Flange Size
(NPS)
Pressure Class
150
300
0.56 0.81 1 .O6 1.50 1.75
...
1 1 1/4 1v2
0.56 0.81 1 .O6 1.50 1.75
2 2‘/2 3 4 5
2.19 2.62 3.19 4.19 5.19
2.19 2.62 3.19 4.19 5.19
... ...
6.19 8.50
10.56 12.50 13.75
6 8 10 12 14
15.75 17.69 19.69 23.75
16 18 20 24
72
3
I4
400 (1)
900 600
(1.2)
1500 (2.3)
2500 (1-3)
0.56 0.81 1 .O6 1.50 1.75
... ... ... ... ...
0.56 0.81 1 .O6 1.31 1.63
0.56 0.81 1 .O6 1.31 1.63
...
4.04 5.05
2.19 2.62 3.10 4.04 5.05
3.10 4.04 5.05
2.06 2.50 3.10 3.85 4.90
2.O6 2.50 3.10 3.85 4.90
6.19 8.50 10.56 12.50 13.75
6.10 8.10 10.05 12.10 13.50
6.10 8.10 10.05 12.10 13.50
6.10 7.75 9.69 11.50 12.63
5.80 7.75 9.69 11.50 12.63
5.80 7.75 9.69 11.50
15.75 17.69 19.69 23.75
15.35 17.25 19.25 23.25
15.35 17.25 19.25 23.25
14.75 16.75 19.00 23.25
14.50 16.75 18.75 22.75
... ...
... ... ...
...
...
...
... ... ...
GENERAL NOTES: (a) The inner-ring thickness shall be 0.117 in. to 0.131 in. (b) For sizes NPS 1’/4 through NPS 3,the inside diameter tolerance is k0.03 in.; for larger sizes the inside diameter tolerance is 20.06 in. See Table 15 for minimum pipe wallthicknesses that are suitable for use with standard inner rings. NOTES: (1) There are no Class 400 flanges NPS through NPS 3 (use Class 600). Class 900 flanges NPS ’I2through NPS 2v2 (use Class 1500),or Class 2500 flanges NPS 14 and larger. (2)Inner rings are required for Class 900,NPS 24 gaskets; Class 1500,NPS 12 through NPS 24 gaskets; and Class 2500,NPS 4 through NPS 12 askets. (3)The inner-ring inside diameters shown forNPS . ! l through NPS 21/2 in Class 1500 and 2500 will produce inner-ring widths of 0.12 in., a practical minimum for production purposes.
21
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
STDDASME BLb-ZU-ENGL L998
m
0759b70 ObLbSbL 3bL
ASME 816.20-1998
FOR PIPE FLANGES
GASKETS METALLIC
TABLE 13 INNER-RING INSIDE DIAMETERS FOR SPIRAL-WOUND GASKETS USED BETWEEN ASME B16.47 SERIES A FLANGES Flange Size INPS)
150
300
400
600
900 (1. 21
26 28 30 32 34 36
25.75 27.75 29.75 31.75 33.75 35.75
25.75 27.75 29.75 31.75 33.75 35.75
26.00 28.00 29.75 32.00 34.00 36.13
25.50 27.50 29.75 32.00 34.00 36.13
26.00 28.00 30.25 32.00 34.00 36.25
38 40 42 44 46 48
37.75 39.75 41.75 43.75 45.75 47.75
37.50 39.50 41 -50 43.50 45.38 47.63
37.50 39.38 41.38 43.50 46.00 47.50
37.50 39.75 42.00 43.75 45.75 48.00
39.75 41.75 43.75 45.50 48.00 50.00
50 52 54 56 58 60
49.75 51.75 53.50 55.50 57.50 59.50
49.00 52.00 53.25 55.25 57.00 60.00
49.50 51.50 53.25 55.25 57.25 59.75
50.00 52.00 54.25 56.25 58.00 60.25
... ..
Pressure Class
GENERAL NOTES: (a) The inner-ring thickness shall be 0.117 in. to 0.131 in. (b) The inside diameter tolerance is 20.12 in. (c) These inner rings are suitable for use with pipe walls0.38 in. or thicker. NOTES: (1) Inner rings are required for Class 900 gaskets. (2)There are no Class 900 flanges NPS 50 and larger.
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COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
.. ... ... ...
4 5
METALLIC GASKETS FOR PIPE FLANGES
ASME 816.20-1998
TABLE 14 INNER-RING INSIDE DIAMETERS FOR SPIRAL-WOUND GASKETS USED BETWEEN ASME B16.47 SERIES B FLANGES
39.75 41.75 43.75 45.75 47.75
51.88 56.25
49.50 51.75 55.25 58.19 59.75
Flange Site WS)
150
300
400
600
900 (1. 21
26 28 30 32 34 36
25.75 27.75 29.75 31.75 33.75 35.75
25.75 27.75 29.75 31.75 33.75 35.75
25.75 27.63 29.63 31.50 33.50 35.38
25.38 27.00 29.63 3 1.25 33.50 35.50
26.25 28.25 30.75 33.00 35.25 36.25
38 40 42 44 46 48
37.75
38.25 40.25 42.75 44.25 46.38 48.50
37.50 39.38 41.38 43.50 46.00 47.50
37.50 39.75 42.00 43.75 45.75
48.00
39.75 41.75 43.75 45.50 48.00 50.00
49.88 50 52 54 56.25 56 58 61.31 60
49.75
50.00 52.00
... ...
Pressure Class
5150
53.75 56.00
53.75
53.25
54.25
... ... ...
60.44
GENERAL NOTES: (a) The inner-ring thickness shall be 0.117 in. to 0.131 in. (b) The inside diameter tolerance is t0.12 in. (c) These inner rings are suitable for use with pipe walls 0.38 in. or thicker. NOTES: (1) Inner rings are required for Class 900 gaskets. (2) There are no Class 900 flanges NPS 50 and larger.
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...
GASKETS METALLIC PIPE
ASME 816.20-1998
FOR
FLANGES
TABLE 15 MINIMUM PIPE WALL THICKNESS SUITABLE FOR USE WITH INNER RINGS FOR ASME 616.5 FLANGES Flange
Pressure Class
Size
INPSI
150
300
400
600
'h 74
900
1500
2500
Schedule 80
1 1'/4 1'/z 2 2'/2 3
40
4
5
Schedule 80
6
8 10 12 14 Schedule
16
10s
Schedule 30
18 20
24
24
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
Schedule 80
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
bi
e
-r
No flanges
75 I
(3) (2)
only
(2)
300
WN
SO flange flange, any bore
600 only
(2)
WN
900 (1)
WN flange with Schedule 10s bore described in ASME B36.19M [excludes nozzle (4) and SO flange] (5)
9 are bore.
only
(2)
2500
(1)
recommended
considering
(5)
the tolerances
No flanges
NOTES: (1) Inner rings are required for Class 900 gaskets, NPS 24; Class 1500 gaskets, NPS 12 through NPS 24; and Class 2500 gaskets, NPS 4 through NPS 12 (see para. 3.2.5). These inner rings may extend into the pipe bore a maximum of 0.06 in. under the worst combination of maximum bore, eccentric installation, and additive tolerances. (2) In these sizes the gasket is suitable for a welding neck flange with a standard wall bore, if the gasket and the flanges are assembled concentrically. This also applies to a nozzle. It is the user’s responsibility to determine if the gasket is satisfactory for a flange of any larger bore. (3) Gaskets in these sizes are suitable for slip-on flanges only if the gaskets and flanges are assembled concentrically. (4) A nozzle is a long welding neck; the bore equals the flange NPS. (5) An NPS 24 gasket is suitable for nozzles.
in Table flange
excludes
WN flange
(1)
WN flange with SW bore [includes nozzle (4) but excludes so flanael
1500
GASKETS
WN flange with Schedule 80 bore nozzle (4) and SO flange]
10s bore described in ASME (4) but excludes SO flange]
SO flange (3) flange, any bore
SO flange (3) WN flange, any bore
WN flange
Class
FOR USE WITH SPIRAL-WOUND
WN flange with Schedule B36.19M [includes nozzle
No flanges Use Class 600
400
Pressure
BORE OF ASME B16.5 FLANGES
SO flange (3) WN flange, any bore
SO flange WN flange
WN flange
150
MAXIMUM
GENERAL NOTES: (a) This table shows the maximum bore of flanges for which the spiral-wound gasket dimensions shown involved, possible eccentric installation, and the possibility that the gasket may extend into the assembled (b) For maximum permissible flange bores for nonmandatory inner rings, see Table 15. SW = standard wall WN = welding neck (c) Abbreviations: SO = slip on and threaded
24
20
18
16
14
12
10
8
6
4
3
Flang Size (NPS
TABLE 16
m s k 1,
$, 5
P
3
E
r 0 n-_
3 Y F
ASME 816.20-1998
FOR PIPE FLANGES
GASKETSMETALLIC
TABLE 17 MAXIMUM BORE OF ASME 816.47 SERIES A FLANGES FOR USE WITH SPIRAL-WOUND GASKETS Flange Size (NPS)
Pressure Class 150
400
300
600
900 (1)
26 28 30 32 34 36 38 40 42 44 46 48 50 52 56 58
60 GENERAL NOTE: This table shows the maximum bore of flanges for which the spiral-wound gasket dimensions shown in Table 10 are recommended, considering the tolerances involved, the possibility of eccentric installation, and the possibility that thegasket may extend into the assembled flange bore. NOTES: (1) Inner rings are required for Class 900 gaskets, NPS 26 through NPS 48 (see para. 3.2.5). (2) Applies only to welding neck flanges with a bore not larger than the inside diameter of a 0.187-in. wall pipe. Larger bores must be checked individually. (3) Applies only to welding neck flanges with a bore not larger than the inside diameter of a 0.25-in. wall pipe, except that NPS 38, Class 300, is not suitable for a bore larger than the inside diameter of a 0.30-in. wall pipe. Larger bores must be checked individually. (4) There are no Class 900 flanges in NPS 50 through 60.
26
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STDeASHE B L b - Z O - E N G L 1778
GASKETS METALLIC
0757b70 ObLbSbb
743
m
ASME FOR PIPE FLANGES
816.20-1998
TABLE 18 MAXIMUM BOREOF ASME B16.47 SERIES B FLANGES FOR USE WITH SPIRAL-WOUND GASKETS Flange Size (NPS)
26 28 30 32 34 36 38 40 44 46 48 50 52 54 56 58 60
Pressure Class 150
300
400
600
900 (1)
Welding neck and integral flanges having maximum inside diameters as described in ASME 816.47
(2) (2) (2) (2) (2) (2)
GENERAL NOTE: This table shows the maximum bore of flanges for which the spiral-wound gasket dimensions shown in Table 11 are recommended, considering the tolerances involved, the possibility of eccentric installation, and the possibility that the gasket may extend into the assembled flange bore. NOTES: (1) Inner rings are required for Class 900 gaskets, NPS 26 through NPS 48 (see para. 3.2.5). (2) There are no Class 900 flanges NPS 50 and larger.
27
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
LIC 816.20-1998
ASME
PIPE
FOR
TABLE 19 COLOR CODING AND ABBREVIATIONS FOR SPIRAL-WOUND . GASKET MATERIALS Metallic Winding Materials Material
Abbreviation
Color Code
Carbon steel 304 SS 304 L SS
CRS 304 304 L
Silver Yellow No color
309 SS 310 SS 316 L SS
309 310 316 L
No color No color Green
347 SS 321 SS 430 SS
347 32 1 430
Blue Turquoise No color
Ni-Cu Monel 400 Grade 400
...
...
MON
Orange
Nickel 200 Titanium 20Cb-3 alloy
NI TI A-20
Red Purple Black
N¡-Mo Hastelloy B Grade B2
... HAST B
...
... Brown ...
...
...
Ni-Mo-Cr Hastelloy C Grade C-276 Ni-Cr-Fe lnconel 600 Grade 600 Ni-Cr-FeCb lnconel 625 Grade 625 Ni-Cr-Fe-Ti lnconel X-750 Grade X-750
...
HAST C
...
... INC 600
...
Beige
... ... Gold ...
... ...
...
INC 625
Gold
...
...
INX
No color
... ...
...
...
...
...
IN 800
White
Ni-Fe-C-Mo-Cu lncoloy 825 Grade 825
IN 825
White
Zirconium
ZlRC
No color
Ni-Fe-Cr lncoloy 800 Grade 800
... ...
...
28
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
... ...
...
FLANGES
GASKETS METALLIC PIPE 616.20-1998
ASME FOR
FLANGES
TABLE 19 COLOR CODING AND ABBREVIATIONS FOR SPIRAL-WOUND GASKET MATERIALS (CONT'D) Nonmetallic Filler Materials Material
Abbreviation
Chrysotile asbestos Polytetrafluoroethylene Mica-graphite Flexible-graphite Ceramic
AS6 PTFE Mfr.'s designation F.G. CER
Color Code
No stripe White stripe Pink stripe Gray stripe Light green stripe
TABLE 20 EXAMPLE MARKINGS FOR SPIRAL-WOUND GASKETS ~~
Description
Marking
NPS 3, Class 300 and 600 ASME 616.5 gasket and winding metal (Manufacturer's material filler graphite trademark) flexible a
Type having a
304
3-300/600-F.G. ASME 616.20
NPS 36, Class 300 ASME 616.47 Series A gasket having a Type 304 metal winding and a ceramic filler material
36-300"CER ASME 016.47 A (Manufacturer's trademark) ASME 616.20
12, NPS Class 1500 ASME 616.5 gasket winding, PTFE material, filler ring inconel inner an and
12-1500 INC 600-PTFE INC 600 I.R. (Manufacturer's trademark) ASME B16.20
having an inconel metal
29
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
Q
4
_I
L
I
Clearance 0.06 in.
Gasket inside diameter
Bolt-hole diameter
Gasket outside diameter
TABLE 21 JACKETED GASKET DIMENSIONS FOR ASME B16.5 FLANGES Gasket Inside Diameter (1)
Flange Size WS)
1 1Y4 15;
0.882.00 1.132.50 2.75 1.883.13 2.133.63
2 251,4.75 3 46.75 5 8.25
3.38 5.75 5.19 6.00 8.38
'12
3
14
2.88 5.00
4.25 7.00 9.38
8
METALLIC GASKETS FOR PIPE FLANGES
ASME B16.20-1998
7.50 9.38 11.25 13.50 19.00 16.75 19.25 25.38 30.13
6 8 10 12 14 17.63
16 18 25.63 20 30.3824
Gasket Outside Diameterby Class (11 150
7.63
400 (2)
600
900 (31
1500
...
2.63 ... 2.88 3.25 ...
2.38 2.63 3.00 3.38 3.75
1.75 2.13 2.50 2.88 3.25
...
2.00 2.50 2.75 3.13 3.63
5.25
... ... 6.50 ...
4.25 5.00 5.75
... ... ...
6.75
...
... 4.50 ...
... .6.50 ..
5.50 6.38
2500 (4)
4.00
5.63
7.63
15.13 12.0013.75 10.8814.00
12.50
11.88
...
14.75 25.13
23.75 28.13
300
22.50
22.13
...
21.o0
21.00 25.25
...
31.O0 35.38
32.88
GENERAL NOTE: The gasket-thickness tolerance is +0.03 in., -0.000 in. NOTES: (1) For gaskets NPS '/2 through NPS 24, the outside and inside diameter tolerancesare +0.06 in., -0.000 in. (2) There are no Class 400 flanges NPS Y2 through NPS 3 (use Class 600). (3) There are no Class 900 flanges NPS through NPS21/2 (use Class 1500). (4) There are no Class 2500 flanges NPS 14 and larger.
30
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
... ...
METALLIC GASKETS FOR PIPE FLANGES
"I thick
bolt hole
-
Clearance 0.06 in.
-+
PBolt-hole diameter
l-b
LGasket inside diameter Gasket outside diameter
TABLE 22 JACKETEDGASKET DIMENSIONS FOR ASME B16.47 SERIES A FLANGES Flange Size
32.75 35.25 37.38
0
.38
3 3
ASME 816.20-1998
30.38 32.63 34.63 42.13 41.50 38.88 36.50 38.50 40.50 42.50 46.50 48.50 50.50 52.50 54.50
60.63 62.63
63.13 65.38
Gasket Inside
Gasket Outside Diameterbv Class (11
26.50 26 28.50 28 30.50 30 40.13 39.383239.50 36.88 32.50 34.50 34 36 38 40 42 44
44.50
46 48 50 52 54
39.63
41.13 43.63 45.63 47.88 50.13
43.88 41.38 43.75 45.75 47.88
43.88 42.13 44.25 46.25 48.38
44.38 43.38 45.38 47.88 49.88
47.13 47.13 49.13 51.13 53.75
52.13 54.38 56.38 58.63 60.88
50.00 52.00 54.13 56.13 58.63
50.6356.38 52.8858.38 55.13 57.13 59.63
52.13 54.63 56.88 58.88 61.13
... ...
... ...
56.50 56 58.50 58 68.13 66.13 60 64.63 67.38 60.50
...
...
GENERAL NOTE: The gasket-thickness tolerance is +0.03 in., -0.000 in. NOTES: (1) For gaskets NPS 26 through NPS 60,the outside diameter and inside diameter tolerances are +0.13 in., -0.000 in. (2)There are no Class 900 flanges NPS 50 and larger.
31
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
METALLIC GASKETS FOR PIPE FLANGES
ASME B16.20-1998
Q
1
L
Clearance 0.06 in.
4
Gasket inside diameter
Bolt-hole diameter
-k
Gasket outside diameter
TABLE 23 JACKETEDGASKET DIMENSIONS FOR ASME B16.47 SERIES B FLANGES Flange Size WS) ~
26.50 28.50 30.50 32.50
~~
Gasket Inside Diameter (1)
150
300
400
600
900 (2)
34.50
28.44 30.44 32.44 34.56 36.69
30.25 32.38 34.75 36.88 39.00
29.25 31-38 33.63 35.75 37.75
30.00 32.13 34.50 36.63 39.13
32.88 35.38 37.63 39.88 42.13
43.13 45.13 47.13 49.13
44.25 46.25 48.38
45.38 47.88 49.88
49.13 51.13 53.75
26 28 30 32 34 44.13 36.50 38.50
40.13
Gasket Outside Diameterby Class (1)
40.50 42.50 44.50
41.1336 38 40 42 44
41.13 38.75 47.13 43.38 41.O0 42.13 43.00 45.00 47.00
46.50 48.50 50.50 52.50 54.50
46 48 50 52 54
49.31 51.31 53.31 55.31 57.50
51.75 53.75 55.75 57.75 60.13
50.63 56.38 52.88 58.38 55.13 57.13 59.63
52.13 54.63 56.88 58.88 61.13
56.50 58.50
56 58 60
59.50 62.06 64.06
62.63 65.06 67.06
61.63. 63.63 66.13
63.13 65.38 68.13
60.50
... ... ... ... ...
...
GENERAL NOTE: The gasket-thickness tolerance is +0.03 in., -0.000 in. NOTES: (1) For gaskets NPS 26 through NPS 60, the outside diameter and inside diameter tolerances are +0.13 in., -0.000 in. (2) There are no Class 900 flanges NPS 50 and larger.
32
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METALLIC GASKETS FOR PIPE FLANGES
ASME 816.20-1998
TABLE 24 ABBREVIATIONS FOR IDENTIFYING MATERIALS FOR JACKETED GASKETS Material
Abbreviation Metals
MON
AI Aluminum CRS steel Carbon Cu Copper Ni-Mo (grade 82) 6 Hastelloy Ni-Mo-Cr (grade C-276) C Hastelloy Ni-Cr-Fe (grade 600) lnconel 600 Ni-Cr-Fe-Cb (grade 625) 625 INClnconel 625 Ni-Fe-Cr (grade 800) lncoloy 800 Ni-Cr-Fe-Ti (grade X-750) lnconel X-750 Ni-Cu (grade 400) Monel Nickel 200 Nickel Soft iron Soft iron Ni-Cr 3-digit steels Stainless Ta TANT Tantalum Ti TI Titanium
AL CS CU HAST B HAST C INC 600 IN 800 INX
NI
Soft iron
Fillers Asbestos Ceramic graphite Flexible Polytetrafluoroethylene
ASB CER F.G. PTFE
TABLE 25 EXAMPLE MARKINGS FORJACKETEDGASKETS Description
Marking
NPS 2'/2, Class150 ASME 816.5gasket havingaType 304 metal jacket andflexible a graphite filler material (Manufacturer's trademark)
2'/2-150-304/F.G. ASME 816.20
616.47 NPS 30, Class 300 ASME carbon-steel jacketceramic and a
Series B gaskethavinga30-300-CSKER filler material ASME 616.47 6 (Manufacturer's trademark) ASME 816.20
33
COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
ASME B16.20-1998
MANDATORY ANNEX I REFERENCES
The following is a list of publications referenced in this Standard.
IS0 9000-2: 1997,Qualitymanagementand quality assurance standards - Part2: Generic guidelines for the application of IS0 9001, IS0 9002, and IS0 9003 IS0 9000-3: 1991,Qualitymanagementand quality assurance standards - Part 3: Guidelines for the application of IS0 9001 to the development, supply, installation, andmaintenanceof computer software IS0 9001: 1994, Quality systems - Model for quality assurance in design, development, production, installation, andservicing IS0 9002: 1994, Quality systems - Model for quality assurance in production, installation,and servicing IS0 9003: 1994, Quality systems - Model for quality assurance in finalinspectionandtest Publisher: International Organization for Standardization (EO), I rue de Varembé, Case postale 56, CH-I 121 Genève 20, Switzerland/Suisse
ASME B16.5-1996, Pipe Flanges and Flanged Fittings' ASME B 16.47-1996,LargeDiameterSteelFlanges: NPS 26 through NPS 60' ASME B36.1OM-1996, Welded and Seamless Wrought Steel Pipe' ASMEB36.19M-1985 (R1994), Stainless Steel Pipe' Publisher: AmericanSociety of MechanicalEngineers (ASME),Three Park Ave., New York, NY 10016; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007
IS0 9000-1: 1994,Qualitymanagementandquality assurance standards - Part 1 : Guidelines for selection anduse
'
API Specification 6A - 17th Edition - 1996, SpecificationforValvesandWellheadEquipment Publisher:AmericanPetroleumInstitute (API), 1220 L Street, NW,Washington, DC 20005
May also be obtainedfromtheAmericanNationalStandards Institute (ANSI), I I West 42nd Street, New York. NY 10036.
35
Previous pageis blank COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
ASME 816.20-1998
NONMANDATORY ANNEX A QUALITY SYSTEM PROGRAM
The productsmanufactured in accordance withthis Standardshall be producedunder a qualitysystem programfollowingtheprinciples of an appropriate standardfromthe IS0 9000 series.’ A determination oftheneedforregistrationand/orcertificationofthe productmanufacturer’s quality systemprogram byan independentorganizationshall be theresponsibility of the manufacturer. Detailed documentationdemonstrating program compliance shall be available to the purchaser at the manufacturer’s facility. A written, summarized description of the program used by the product manufacturer shall be available to thepurchaserupon request. The product manufacturer is defined as the entity whose name or trademark appears on the product in accordance with the marking or identification requirements of this Standard.
’ The series is alsoavailable from the American NationalStandards
Institute (ANSI) andtheAmerican SocietyforQuality (ASQ)as American NationalStandards thatare identified by aprefix “Q’ replacing theprefix “ISO. Eachstandard of the seriesislisted in Annex I.
37
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0757b70 O b L b 7 7 5 75b W
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AMERICAN NATIONAL STANDARDS FOR PIPING. PIPE FLANGES. FITTLNGS. AND VALVES
.'.
Scheme for the Identification of PipingSystems ........................................................... .A13.1-1996 Pipe Threads. General Purpose (Inch)........................................................ .... 61.20.1-1983(R1992) Dryseal Pipe Threads (Inch)......................................................................... -61.20.3-1976(R1991) Cast Iron Pipe Flanges and Flanged Fittings:Classes 25, 125, and 250 ..................................... , .. .B16.1.1998 Malleable Iron Threaded Fittings: Classes 150 and 300 ...................................................... .B16.3.1998 Gray Iron Threaded Fittings: Classes 125 and 250 .......................................................... .B16.4.1998 Pipe Flanges and Flanged Fittings (NPS Through NPS 24) ................................................ .616.5.1996 Factory-Made Wrought Steel Buttwelding Fittings.......................................................... .B16.9.1993 Face-to-Face and End-to-End Dimensions of Valves ....................................................... .B16.10.1992 Forged Fittings, Socket-Weldingand Threaded............................................................ .B16.1 1.1996 Cast Iron Threaded Drainage Fittings .................................................................... .B16.12.4998 Ferrous Pipe Plugs, Bushings, and Locknutswith Pipe Threads.............................................. .B16.14.1991 Cast Bronze Threaded Fittings: Classes 125 and 250 ................................................ .B16.15.1985(R1994) Cast Copper Alloy Solder Joint Pressure Fittings................................................... .B16.1 8.1984(Rlg94) Metallic Gaskets for Pipe Flanges: Ring.Joint, Spiral.Wound. and Jacketed............................ i .B16.20.1998 Nonmetallic Flat Gaskets for Pipe Flanges................................................................ .B16.21.1992 Wrought Copper and Copper Alloy Solder Joint Pressure Fittings ........................................... .B16.22.1995 Cast Copper Alloy Solder Joint Drainage Fittings - DWV .................................................. .616.23.1992 Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300,400,600,900, 1500, and 2500 ... .B16.24.1991Wi1998) Buttwelding Ends...................... i ............................................................... .616.25.1997 Cast Copper Alloy Fittings forFlared Copper Tubes....................................................... .B16.26.1988 Wrought Steel Buttwelding Short Radius Elbows and Returns .B16.28.1994 Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings - DWV .......................... .B16.29.1994 Manually Operated Metallic Gas Valves for Use in Gas Piping Systems up f o 125 psig (Sizes 1/2 Through 2) ............................................................................... .616.3 3.1990 Valves - Flanged, Threaded. and Welding End........................................................... .B16.34.1996 Orifice Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 616.36-1996 Large Metallic Valves forGas Distribution (Manually Operated, NPS 2% to 12, 125 psig Maximum) ..... .B16.38.1985(R1994J Malleable Iron Threaded Pipe Unions...................................................................... .B16.39.1998 Manually Operated Thermoplastic Gas Shutoffs and Valvesin Gas Distribution Systems ............... .B16.40.1985(R1994) Ductile Iron Pipe Flanges and Flanged Fittings,Classes 150 and 300 .B164 2.1998 Manually Operated Metallic Gas Valves for Use in House Piping Systems .B16.44.1995 Cast Iron Fittings forSovent* Drainage Systems.......................................................... .B16.45.1998 Large Diameter SteelFlanges (NPS 26 Through NPS 60) .................................................... .B16.47.1996 Steel Line Blanks...................................................................................... .B16.48 .W97 Power Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 631.1-1995 Fuel Gas Piping (notan ANSI standard) .B31. 2.1968 Process Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B31.3.1999 Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids .................................. .B31.4.1992 Refrigeration Piping..................................................................................... .631.5.1992 Gas Transmission and Distribution Piping Systems......................................................... .B31.8.1995 Building Services Piping................................................................................. .631. 9.1996 Slurry Transportation Piping Systems .................................................................... .B31.1 1.1989 Manual for Determining the Remaining Strengthof Corroded Pipelines .B31G.1991 Welded and Seamless Wrought Steel Pipe.............................................................. B36.10M-1996 Stainless Steel Pipe............................................................................ 836.19M-l985(R1994) Self-operated and Power-Operated Safety-Related Valves Functional Specification Standard .N278. 1.1975(R1992)
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COPYRIGHT American Society of Mechanical Engineers Licensed by Information Handling Services
