Asme b16.36 - 1996 - Orifice Flanges

INDD BZb.36 88 - 2595512 0078093 T48 -

ASME-B16.36

ADOPTION NOTICE

ASME-B16.36, "Flanges, Orifice," was adopted on October 3, 1994 for use by the Department of Defense (DOD). Proposed changes by DOD activities must be submitted to the DOD Adopting Activity: Commanding Officer, Naval Construction Battalion Center, Code 156, 1000 23rd Avenue, Port Hueneme, CA 93043-4301. DOD activities may obtain copies of this standard from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. The private sector and other Government agencies may purchase copies from the American Society of Mechanical Engineers, 345 East 47th Street, New York, NY 10017.

Custodians: Army - ME Navy - YD-1 Air Force - 99

Adopting Activity Navy - YD-1

.

FSC 4730

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

COPYRIGHT American Society of Mechanical EngineersLicensed by Information Handling ServicesCOPYRIGHT American Society of Mechanical EngineersLicensed by Information Handling Services

INDD B1|I=.3I= BB _ E5“l551|E EIEI'?BU“l3 Tll —

ASME-B16.36

ADOPTION NOTICE

ASME—B16.36, "Flanges, Orifice," was adopted on October 3,1994 for use by the Department of Defense (DoD). Proposedchanges by DoD activities must be submitted to the DoDAdopting Activity: Commanding Officer, Naval ConstructionBattalion Center, Code 156, 1000 23rd Avenue, Port Hueneme,CA 93043-4301. DoD activities may obtain copies of thisstandard from the Standardization Document Order Desk, 700Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.The private sector and other Government agencies maypurchase copies from the American Society of MechanicalEngineers, 345 East 47th Street, New York, NY 10017.

Custodians: Adopting ActivityArmy - ME Navy — YD—lNavy — YD—lAir Force — 99

FSC 4730

DISTRIBUTION STATEMENT A. Approved for public release;distribution is unlimited.


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STD - ASHE BLl= - Eil=—ENGL 1.=i=ii= I U?5'=ii=?U u5?=1e=i1. TH '-I u at

(Revision nl ASME/ANSI Biii.3B-1988)

ll|i|F||JEFU\|\|[iESAN AMERICAN NATIONALSTANDARD

-1 The American Society of® Mechanical Engineers

~~ -

STD-ASME B l b - 3 b - E N G L L77b - 0757b70 0577272 980

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

ORIFICE LANCES .

ASME B16.36-1996 (Revision of ASMVANSI B16.36-1988)


STD ASHE B1ii= ai. ENGL ]i‘i'=ib I nvsaevu i;i5?=ia'=ia aiici I

The American Society oi® Mechanical Engineers

AN AMERICAN NATIONAL STANDARD

lllililllli FU\l\|liES

ASME B1B.3li—199Biniiiiiii ii iisiiii/iiiisi iiiiiriii-iiiasi

, STD-ASME B L b - 3 b - E N G L L77b 0757b70 0577273 AL7

Date of Issuance: January 31, 1997

The 1996 edition of this Standard is being issued with an automatic addenda subscription service. The use of an addenda allows revisions made in response to public review comments or committee actions to be published as necessary; 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 2001.

ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. The interpretations will be included with the above addenda service. Interpretations are not part of the addenda to the Standard.

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 Consensus 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 which provides 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 mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent, nor assume 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(s1 or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.

ASME accepts responsibility for only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual volunteers.

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 345 East 47th Street, New York, NY 10017

Copyright Q 1997 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

All Rights Reserved Printed in U.S.A.


STD-ASHE B1il=-Ell;-ENGL ]i'=l“lb I |J75“ll=?D El57'3E'=l3 Elli? K

Date of Issuance: January 31, 1997

The 1996 edition of this Standard is being issued with an automatic addendasubscription service. The use of an addenda allows revisions made in responseto public review comments or committee actions to be published as necessary;revisions published in addenda will become effective 6 months after the Dateof Issuance of the addenda. The next edition of this Standard is scheduled forpublication in 2001.

ASME issues written replies to inquiries concerning interpretations of technicalaspects of this Standard. The interpretations will be included with the aboveaddenda sen/ice. Interpretations are not part of the addenda to the Standard.

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 forAmerican National Standards. The Consensus Committee that approved the code or standard wasbalanced to assure that individuals from competent and concerned interests have had anopportunity to participate. The proposed code or standard was made available for public reviewand comment which provides 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, oractivity.

ASME does not take any position with respect to the validity of any patent rights asserted inconnection with any items mentioned in this document, and does not undertake to insureanyoneutilizing a standard against liability for infringement of any applicable Letters Patent, nor assumeany such liability. Users of a code or standard are expressly advised that determination of thevalidity oi any such patent rights, and the risk of infringement of such rights, is entirely their ownresponsibility.

Participation by federal agency representetivelsl or personlsl affiliated with industry is not to beinterpreted as government or industry endorsement of this code or standard.

ASME accepts responsibility for only those interpretations issued in accordance with governingASME procedures and policies which preclude the issuance of interpretations by individualvolunteers.

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 Engineers345 East 47th Street, New York, NY 10017

Copyright © 1997 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

All Rights Resen/edPrinted in U.S.A.

FOREWORD

(This Foreword is not part of ASME 616.36-1996.)

August of 1956 marked the first recorded correspondence noting the lack of standardization for orifice flanges. There were, and still are, several codes for the performance and calibration of orifice flanges, but there had been no standardization of the flanges themselves. Over the ensuing 3 years, correspondence continued among the Instrument Society of America, American Gas Association, and the B 16 Standards Committee.

On December 3, 1959, Subcommittee 3 (now Subcommittee C) of B16 authorized the appointment of a Task Force to undertake drafting of a standard. Although the intial work progressed smoothly, a controversy developed over the standard size of taps to be specified for the flanges. This required many years to resolve. It was finally achieved in 1973 with the issuance of a draft from the Task Force. Comments and objections to this draft from members of Subcommittee C were resolved, and a redraft was approved by the Subcommittee late in 1974. The B16 Standards Committee was balloted in the spring of 1975 and approval was gained. Comments from B16 members from the gas industry requested that the Class 400 orifice flange be included, and the B16 Subcommittee C agreed to consider this for a possible addendum. The Standard was approved by ANSI on August 15, 1975.

On April 30, 1979, an addenda was issued which added Class 400 flanges and Annex B covering reference documents and organizations.

In 1982, American National Standards Committee B16 was reorganized as an ASME Committee operating under procedures accredited by ANSI. In the 1988 edition, figures were added to illustrate jack bolts and corner taps, metric units have been omitted, and references to other standards have been updated. Following approval by the B 16 Main Committee and the ASME Supervisory Board, the Standard was approved as an American National Standard by ANSI on February 18, 1988.

This 1996 Edition adds angular meter taps for ring joint flanges in sizes not previously covered and includes several other revisions. Following approval by the B 16 Main Committee and the ASME Supervisory Board, this Standard was approved as an American National Standard by ANSI on November 6, 1996.

Requests for interpretations or suggestions for revisions should be sent to the Secretary, B 16 Committee, The American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, NY 10017.

... 111


STD-ASHE B1il=-Elb-ENGL ]i"i"ll= I El?5"ll=?[l El5?"lE'=lLl 753 -

FOREWORD

(This Foreword is not part of ASME 816.36-1996.)

August of 1956 marked the rst recorded correspondence noting the lack of standardizationfor ori ce anges. There were, and still are, several codes for the performance and calibrationof ori ce anges, but there had been no standardization of the anges themselves. Overthe ensuing 3 years, correspondence continued among the Instrument Society of America,American Gas Association, and the B16 Standards Committee.

On December 3, 1959, Subcommittee 3 (now Subcommittee C) of B16 authorized theappointment of a Task Force to undertake drafting of a standard. Although the intial workprogressed smoothly, a controversy developed over the standard size of taps to be speci edfor the anges. This required many years to resolve. It was nally achieved in 1973 withthe issuance of a draft from the Task Force. Comments and objections to this draft frommembers of Subcommittee C were resolved, and a redraft was approved by the Subcommitteelate in 1974. The B16 Standards Committee was balloted in the spring of 1975 and approvalwas gained. Comments from B16 members from the gas industry requested that the Class400 ori ce ange be included, and the B16 Subcommittee C agreed to consider this for apossible addendum. The Standard was approved by ANSI on August 15, I975.

On April 30, 1979, an addenda was issued which added Class 400 anges and AnnexB covering reference documents and organizations.

In I982, American National Standards Committee B16 was reorganized as an ASMECommittee operating under procedures accredited by ANSI. In the 1988 edition, gureswere added to illustrate jack bolts and comer taps, metric units have been omitted, andreferences to other standards have been updated. Following approval by the B16 MainCommittee and the ASME Supervisory Board, the Standard was approved as an AmericanNational Standard by ANSI on February 18, 1988.

This 1996 Edition adds angular meter taps for ring joint anges in sizes not previouslycovered and includes several other revisions. Following approval by the B16 Main Committeeand the ASME Supervisory Board, this Standard was approved as an American NationalStandard by ANSI on November 6, 1996.

Requests for interpretations or suggestions for revisions should be sent to the Secretary,B16 Committee, The American Society of Mechanical Engineers, United Engineering Center,345 East 47th Street, New York, NY 10017.

iii

ASME B16 COMMlllEE Standardization of Valves, Flanges, Fittings, Gaskets, and Valve

Actuators

(The following is the roster of the Committee at the time of approval of this Standard.)

OFFICERS

W. N. McLean, Chair R. A. Schmidt, Vice Chair K. M. Ciciora, Secretary

COMMITTEE PERSONNEL

W. L. Ballis, Columbia Gas Distribution Co., Columbus, Ohio R. R. Brodin, Fisher Controls International, Inc., Marshalltown, Iowa M. A. Clark, Nibco Inc., Elkhart, Indiana A. Cohen, Copper Development Association, Inc., New York, New York W. C. Farrell, Jr., Consultant, Birmingham, Alabama C. E. Floren, Mueller Co., Decatur, Illinois D. R. Frikken, Monsanto Co., St. Louis, Missouri M. W. Garland, Frick Co., Waynesboro, Pennsylvania J. C. Inch, Mueller Refrigeration Products Co., Hartsville, Tennessee G. A. Jolly, The Henry Vogt Machine Co., Louisville, Kentucky W. G. Knecht, Consultant, Williamsport, Pennsylvania R. A. Koester, The William Powell Co., Cincinnati, Ohio W. N. McLean, Newco Valve Co., Palos Park, Illinois M. L. Nayyar, Bechtel Corp., Gaithersburg, Maryland R. A. Schmidt, Ladish Co., Rucsellville, Arkansas W. M. Stephan, Flexitallic Inc., Pennsauken, New Jersey T. F. Ctroud, Ductile Iron Research Association, Birmingham, Alabama M. D. Wasicek, ABS Americas, Houston, Texas R. E. White, Richard E. White Et Associates, South Bend, Indiana D. A. Williams, Southern Company Services, Birmingham, Illinois L. A. Willis, Dow Chemical Co., Freepori, Texas W. R. Worley, Union Carbide Corp., South Charleston, West Virginia

PERSONNEL OF SUBCOMMllTEE C - STEEL FLANGES AND FLANGED FITTINGS

D. R. Frikken, Chair, Monsanto Co., St. Louis, Missouri K. M. Ciciora, Secretary, ASME International, New York, New York V. C. Bhasin, Sigmatech, Pittsburgh, Pennsylvania G. D. Conlee, Consultant, St. Louis, Missouri W. C. Farrell, Jr. Consultant, Birmingham, Alabama M. L. Henderson, Coffer Corp., Houston, Texas R. E. Johnson, Flowline Div., New Castle, Pennsylvania R. Koester, The William Powell Co., Cincinnati, Ohio R. Madewell, Flo-Bend Inc., Sand Springs, Oklahoma

V


STD-ASHE B1rl=-3!:-ENGL 1r"l“lI= - [l?5'=ll=?l] l]5?'=lE“lS |=°lT -

ASME B16 COMMITTEEStandardization of Valves, Flanges, Fittings, Gaskets, and Valve

Actuators

(The following is the roster of the Committee at the time of approval of this Standard.)

OFFICERS

5.: ;.>§N. McLean, ChairSchmidt, Vice Chair

Ciciora, Secretary

COMMITTEE PERSONNEL

§FpP55§?3§?§9*5p9§?5?§ p??FpTg?Fz?oP9§?@OQP?F

we‘‘L5:

Ballis, Columbia Gas Distribution Co., Columbus, OhioBrodin, Fisher Controls International, lnc., Marshalltown, IowaClark, Nibco lnc., Elkhart, Indianahen, Copper Development Association, lnc., New York, New YorkFarrell, Jr., Consultant, Birmingham, Alabama

Floren, Mueller Co., Decatur, IllinoisFrikken, Monsanto Co., St. Louis, MissouriGarland, Frick Co., Waynesboro, Pennsylvaniach, Mueller Refrigeration Products Co., Hartsville, Tennesseeolly, The Henry Vogt Machine Co., Louisville, KentuckyKnecht, Consultant, Williamsport, Pennsylvania

Koester, The William Powell Co., Cincinnati, OhioMcLean, Newco Valve Co., Palos Park, IllinoisNayyar, Bechtel Corp., Gaithersburg, MarylandSchmidt, Ladish Co., Russellville, ArkansasStephan, Flexitallic lnc., Pennsauken, New Jerseytroud, Ductile Iron Research Association, Birmingham, AlabamaWasicek, ABS Americas, Houston, Texas

White, Richard E. White 8 Associates, South Bend, IndianaWilliams, Southern Company Services, Birmingham, IllinoisWillis, Dow Chemical Co., Freeport, TexasWorley, Union Carbide Corp., South Charleston, West Virginia

PERSONNEL OF SUBCOMMITTEE C —- STEEL FLANGES AND FLANGEDFITTINGS

?7PP§§§3.<?<.U §7<!'"g-pP.°_§?'

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kken, Chair, Monsanto Co., St. Louis, Missouriiora, Secretary, ASME International, New York, New York

asin, Sigmatech, Pittsburgh, Pennsylvaniaonlee, Consultant, St. Louis, Missouri

Farrell, Jr. Consultant, Birmingham, AlabamaHenderson, Coffer Corp., Houston, TexasJohnson, Flowline Div., New Castle, Pennsylvania

oester, The William Powell Co., Cincinnati, Ohioadewell, Flo-Bend lnc., Sand Springs, Oklahoma

V

~ -~ -~

S T D - A S M E B L b - 3 b - E N G L L77b 0757b70 057927b 52b

W. N. Mclean, Newco Valve Co., Palos Park, Illinois M. L. Nayyar, Bechtel Corp., Gaithersburg, Maryland R. A. Schmidt, Ladish Co., Russellville, Arkansas D. L. Shira, Taylor Forge, Cordova, Tennessee J. C. Thompson, Milwaukee Valve, Rising Sun, Maryland L. A. Willis, Dow Chemical Co., Freeport, Texas

vi


ST1>.AS|“lE B1|l=-Ell:-ENGL 1-‘Flb I u?s=u=.?u u5?=1e=u= sen, —

!'!-PPEE .>9!'?r-‘Z

McLean, Newco Valve Co., Palos Park, IllinoisNayyar, Bechtel Corp., Gaithersburg, MarylandSchmidt, Ladish Co., Russellville, ArkansasShira, Taylor Forge, Cordova, TennesseeThompson, Milwaukee Valve, Rising Sun, MarylandWillis, Dow Chemical Co., Freeport, Texas

vi

CONTENTS

Foreword ....................................................................... iii Standards Committee Roster ...................................................... v

1 2 3 4 5 6 7 8 9

10 11 12

Scope .................................................................... 1 Pressure-Temperature Ratings .............................................. 1 Material .................................................................. 1 Size ...................................................................... 1 Marking .................................................................. 1 Flange Facing Finish ...................................................... 2 Gaskets for Raised Face Flanges ........................................... 2 Pressure Taps ............................................................. 2 Jack Screw Provision ...................................................... 2 Dimensions ............................................................... 2 Flange Threads ............................................................ 2 Tolerances ................................................................ 3

Figures 1 Comer Taps .............................................................. 4 2 Jack Bolts ................................................................ 4 3 Angular Meter Tap for RTJ Flanges ....................................... 5

Tables 1 Class 300 Orifice Flanges. Welding Neck. Slip.On. and Threaded ............ 6 2 Class 400 Orifice Flanges. Welding Neck .................................. 8 3 Class 600 Orifice Flanges. Welding Neck .................................. 10 4 Class 900 Orifice Flanges. Welding Neck .................................. 12 5 Class 1500 Orifice Flanges. Welding Neck ................................. 14 6 Class 2500 Orifice Flanges. Welding Neck ................................. 16

Annex A Quality System Program ................................................... 17 B References ................................................................ 19

Interpretations ............................................................... 21

vii


STD-ASHE B1|l=-3b-ENGL 1|“l'il= - El?5‘ll=?[l El57‘lE‘l? lll=E -

CONTENTS

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. iiiStandards Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Pressure—Temperature Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Flange Facing Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Gaskets for Raised Face Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..Pressure Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

9 Jack Screw Provision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..10 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..11 Flange Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..12 Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

OO\lU\§J1-I=~UJl\7*—‘

UJlQl\Jl\)I\)l\)l\JI-“'-‘I-'-"-‘

Figures1 Comer Taps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 42 Jack Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 43 Angular Meter Tap for RTJ Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5

Tables1 Class 300 Ori ce Flanges, Welding Neck, Slip-On, and Threaded . . . . . . . . . . .. 62 Class 400 Ori ce Flanges, Welding Neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8

Class 600 Ori ce Flanges, Welding Neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10Class 900 Ori ce Flanges, Welding Neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 12Class 1500 Ori ce Flanges, Welding Neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 14Class 2500 Ori ce Flanges, Welding Neck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16C\LI1->03

AnnexA Quality System Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . .. 17B References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19

Interpretations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

V11

1 SCOPE

1.1 General

ASME B16.36-1996

ORIFICE FLANGES Classes 300,400,600,900,1500, and 2500

This Standard covers flanges (similar to those covered in ASME B 16.5) that have orifice pressure diffential connections. Coverage is limited to the following:

(a) welding neck flanges Classes 300, 400, 600, 900, 1500, and 2500

(b) slip-on and threaded Class 300

1.2 References

1.2.1 Referenced Standards. Standards and specifications adopted by reference in this Standard are shown in Annex B, which is part of this Standard. It is not considered practical to identify the specific edition of each standard and specification in the individual references. Instead, the specific edition reference is identified in Annex B. A flange manufactured in accordance with earlier editions of the referenced standards and in all other respects conforming to this Standard will be considered to be in accordance with this Standard.

1.2.2 Codes and Regulations. A flange used under the jurisdiction of the ASME Boiler and Pressure Vessel Code, the ASME Code for Pressure Piping, or a governmental regulation is subject to any limitation of that Code or regulation. This includes any maximum temperature limitation, or rules governing the use of a material at low temperature, or provisions for operation at pressure exceeding the pressure-temperature ratings in this Standard.

1.3 Content

The requirements of this Standard include: (a) pressure ratings (6) marking (c) materials (d) dimensions (e) tolerances

1.4 Quality Systems

Non-mandatory requirements relating to the product manufacturer’s Quality System Program are described in Annex A.

2 PRESSURE-TEMPERATURE RATINGS

The pressure-temperature ratings, including all use recommendations and limitations, and the method of rating given in ASME B16.5 apply to these flanges.

3 MATERIAL

3.1 General

Flange materials shall meet all requirements of ASME B16.5.

3.2 Bolting

Material shall be in accordance with ASME B16.5.

3.3 Plugs

Pressure retaining plugs shall conform to ASME B 16.1 1, unless otherwise agreed between purchaser and manufacturer. Plug material shall be at least as corrosion resistant as the corresponding flange material.

4 SIZE

Orifice flange sizes are indicated by the nominal pipe size to which they are attached. Only those listed in Tables 1 through 6 are considered standard.

5 MARKING

Flanges shall be marked as required in ASME B16.5. For welding neck flanges only, the bore diameter shall be marked.

1


STD-ASHE B]il=|-31:-ENGL 1l“l“lI=| - I]75"lI=|7l] |]5?“lE'=lB 3T“| -

ASME B1636-1996

ORIFICE FLANGESClasses 300, 400, 600, 900, 1500, and 2500

1 SCOPE

1.1 General

This Standard covers anges (similar to those coveredin ASME Bl6.5) that have ori ce pressure diffentialconnections. Coverage is limited to the following:

(a) welding neck anges Classes 300, 400, 600, 900,1500, and 2500

(b) slip-on and threaded Class 300

1.2 References

1.2.1 Referenced Standards. Standards and spec-i cations adopted by reference in this Standard areshown in Annex B, which is part of this Standard. Itis not considered practical to identify the speci c editionof each standard and speci cation in the individualreferences. Instead, the speci c edition reference isidenti ed in Annex B. A ange manufactured in accord-ance with earlier editions of the referenced standardsand in all other respects conforming to this Standard willbe considered to be in accordance with this Standard.

1.2.2 Codes and Regulations. A ange usedunder the jurisdiction of the ASME Boiler and PressureVessel Code, the ASME Code for Pressure Piping, ora governmental regulation is subject to any limitationof that Code or regulation. This includes any maximumtemperature limitation, or rules governing the use ofa material at low temperature, or provisions for operationat pressure exceeding the pressure—temperature ratingsin this Standard.

1.3 Content

The requirements of this Standard include:(a) pressure ratings(b) marking(c) materials(d) dimensions(e) tolerances

1.4 Quality Systems

Non-mandatory requirements relating to the productmanufacturer’s Quality System Program are describedin Annex A.

2 PRESSURE-TEMPERATURE RATINGS

The pressure—temperature ratings, including all userecommendations and limitations, and the method ofrating given in ASME B16.5 apply to these anges.

3 MATERIAL

3.1 GeneralFlange materials shall meet all requirements of ASME

B 16.5.

3.2 Bolting

Material shall be in accordance with ASME Bl6.5.

3.3 Plugs

Pressure retaining plugs shall conform to ASMEBl6.l 1, unless otherwise agreed between purchaser andmanufacturer. Plug material shall be at least as corrosionresistant as the corresponding ange material.

4 SIZE

Ori ce ange sizes are indicated by the nominalpipe size to which they are attached. Only those listedin Tables 1 through 6 are considered standard.

5 MARKING

Flanges shall be marked as required in ASME B16.5.For welding neck anges only, the bore diameter shallbe marked.

ASME 616.36-1996

6 FLANGE FACING FINISH

The finish of contact faces shall conform to the requirements of ASME B16.5.

7 GASKETS FOR RAISED FACE FLANGES

7.1 Gasket Thickness

thick gaskets.' Flange dimensions are based on the use of 0.06 in.


If gaskets of differing hardness and compressibility are used, the rules of Annex E of ASME B16.5 shall govern.

8 PRESSURE TAPS

8.1 General

Each orifice flange is provided with two pressure tap holes extending radially from the outside diameter of the flange to the inside diameter of the flange. Comer taps may be used on NPS 1p2 and smaller if space permits. See Fig. 1. For ring joint flanges listed in Tables 2 through 6, where radial taps will interfere with the ring groove, angular meter taps, as illustrated in Fig. 3, will be required. Each pressure tap hole shall be equipped with a pipe plug.

8.2 Location

The 0.94 in. locating dimension for raised face and 0.75 in. for ring joint' shall be measured at the bore.

8.3 Pipe Connection

Unless otherwise specified, pressure tap holes may be either tapped v2 NPT or v2 N P S socket connection in accordance with AME B16.11.

When the location of the pressure tap with respect to the orifice plate is critical for the service and metering conditions, its location may be altered to accomodate other than 0.06 in. thick gaskets or ring type joint gaskets whose thickness may vary from that listed in Tables 2, 3, 4, 5, and 6.

The alteration of location may also be accomplished by the removal of 0.06 in. from the raised face of the flange. If an original 0.06 in. high raised face is removed, the user is cautioned to limit the outside. diameter of the gasket or orifice plate to the tabulated R dimension.

ORIFICE FLANGES

9 JACK SCREW PROVISION

9.1 Location

Each flange shail have a machine bolt mounted in a hole drilled on the flange center line at 90 deg. from the pressure taps, for use as a jack screw. Machine bolt shall be regular with one heavy hex nut. See Fig. 2.

9.2 Slot for Nut

A slot shall be provided in the flange 0.06 in. wider than the width across flats of the nut. The depth of the slot shall admit the nut so that there is no interference with the joining of the flanges when bolted together without orifice plate.

9.3 Tapped Hole

As an alternative to para. 9.2., a tapped hole may be provided and the hex nut omitted when agreed on between the purchaser and the manufacturer.

10 DIMENSIONS

10.1 Flange Dimensions

Dimensions are listed in Tables 1, 2, 3, 4, 5, and 6.

10.2 Gasket Dimensions

Gasket dimensions shall be in accordance with Ap- pendix E of ASME B16.5.

11 FLANGE THREADS

Threaded flanges shall have an American National Standard taper pipe thread conforming to ASME B1.20.1.

(a) The thread shall be concentric with the axis of the flange. Variations in alignment shall not exceed 0.06 in./ft. (0.5%).

(b) The flanges are made with counterbores at the back of the flange and the threads shall be chamfered to the diameter of the counterbore at an angle of approximately 45 deg. with the axis of the thread to afford easy entrance in making a joint. The counterbore and chamfer shall be concentric with the thread.

(c) In order to permit the pipe to be inserted to the face of the flange, the threads should have full root diameters through to the face of the flange, or shall have a counterbore at the face of the flange.

2


L STD-ASME Bllb-3|:-ENGL L"l°Il= I EI?5“II=7EI I]57“lE"I'=l E35 -

ASME B16.36-1996

6 FLANGE FACING FINISH

The nish of contact faces shall conform to therequirements of ASME Bl6.S.

7 GASKETS FOR RAISED FACE FLANGES


Flange dimensions are based on the use of 0.06 in.thick gaskets}

7.2 Gasket ThicknessIf gaskets of differing hardness and compressibility

are used, the rules of Annex E of ASME Bl6.5 shallgovern.

8 PRESSURE TAPS

8.1 GeneralEach ori ce ange is provided with two pressure

tap holes extending radially from the outside diameterof the ange to the inside diameter of the ange.Comer taps may be used on NPS 11/2 and smaller ifspace permits. See Fig. 1. For ring joint anges listedin Tables 2 through 6, where radial taps will interferewith the ring groove, angular meter taps, as illustratedin Fig. 3, will be required. Each pressure tap hole shallbe equipped with a pipe plug.

8.2 LocationThe 0.94 in. locating dimension for raised face and

0.75 in. for ring joint‘ shall be measured at the bore.

8.3 Pipe ConnectionUnless otherwise speci ed, pressure tap holes may

be either tapped ‘/2 NPT or 1/2 NPS socket connectionin accordance with AME B16.11.

1 When the location of the pressure tap with respect to the ori ceplate is critical for the service and metering conditions, its locationmay be altered to accomodate other than 0.06 in. thick gaskets orring type joint gaskets whose thickness may vary from that listedin Tables 2, 3, 4, 5, and 6.

The alteration of location may also be accomplished by the removalof 0.06 in. from the raised face of the ange. If an original 0.06in. high raised face is removed, the user is cautioned to limit theoutside diameter of the gasket or ori ce plate to the tabulated Rdimension.

ORIFICE FLANGES

9 JACK SCREW PROVISION

9.1 Location

Each ange shall have a machine bolt mounted ina hole drilled on the ange center line at 90 deg. fromthe pressure taps, for use as a jack screw. Machinebolt shall be regular with one heavy hex nut. See Fig. 2.

9.2 Slot for NutA slot shall be provided in the ange 0.06 in. wider

than the width across ats of the nut. The depth ofthe slot shall admit the nut so that there is no interferencewith the joining of the anges when bolted togetherwithout ori ce plate.

9.3 Tapped HoleAs an altemative to para. 9.2., a tapped hole may

be provided and the hex nut omitted when agreed onbetween the purchaser and the manufacturer.

10 DIMENSIONS

10.1 Flange DimensionsDimensions are listed in Tables 1, 2, 3, 4, 5, and 6.

10.2 Gasket Dimensions

Gasket dimensions shall be in accordance with Ap-pendix E of ASME B16.5. A

11 FLANGE THREADS

Threaded anges shall have an American NationalStandard taper pipe thread conforming to ASMEB1.20.l.

(a) The thread shall be concentric with the axis ofthe ange. Variations in alignment shall not exceed0.06 in./ft. (0.5%).

(b) The anges are made with counterbores at theback of the ange and the threads shall be chamferedto the diameter of the counterbore at an angle ofapproximately 45 deg. with the axis of the thread toafford easy entrance in making a joint. The counterboreand chamfer shall be concentric with the thread.

(c) In order to permit the pipe to be inserted to theface of the ange, the threads should have full rootdiameters through to the face of the ange, or shallhave a counterbore at the face of the ange.

ORIFICE FLANGES

(d) The gaging notch of the working gage shall come flush with the bottom of the chamfer in all threaded flanges and shall be considered as being the intersection of the chamfer cone and the pitch cone of the thread. This depth of chamfer is approximately equal to one-half ('I2) the pitch of the thread.

(e) The maximum allowable thread variation is one turn large or small from the gaging notch.

12 TOLERANCES

Tolerances on all dimensions shall be as shown in ASME B16.5 except for those shown below.

ASME 816.36-1996

12.1 Pressure Tap Location

from flange face shall be: Tolerance on location of center of pressure tap hole'

(a) flanges smaller than NPS 4, 20.02 in. (b) flanges NPS 4 and larger, 20.03 in.

12.2 Bore Diameter

Bore diameter tolerance (welding neck flanges only) is + O S % of nominal value.

* See para. 8.2.

3


STD-ASHE B1lI=-3|;-ENGL 1|'1'=lI= - [l75“Il=?U El5?“IElIJl] BB? _

ORIFICE FLANGES

(d) The gaging notch of the working gage shallcome ush with the bottom of the chamfer in allthreaded anges and shall be considered as being theintersection of the chamfer cone and the pitch cone ofthe thread. This depth of chamfer is approximatelyequal to one-half (I/2) the pitch of the thread.

(e) The maximum allowable thread variation is onetum large or small from the gaging notch.

12 TOLERANCES

Tolerances on all dimensions shall be as shown inASME Bl6.5 except for those shown below.

ASME B16.36-1996

12.1 Pressure Tap Location

Tolerance on location of center of pressure tap holezfrom ange face shall be:

(a) anges smaller than NPS 4, $0.02 in.(b) anges NPS 4 and larger, $0.03 in.

12.2 Bore Diameter

Bore diameter tolerance (welding neck anges only)is i0.5% of nominal value.

2 See para. 8.2.

ASME 816.36-1996 ORIFICE FLANGES

FIG. 1 CORNER TAPS

FIG. 2 JACK BOLTS

4


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5


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AS ME B 16.36- 1 996

ANNEX A QUALITY SYSTEM PROGRAM

(This Annex is not part of ASME 616.36-1996 and is included for information only.)

The products manufactured in accordance with this Standard shall be produced under a quality system program following the principles of an appropriate standard from the IS0 9000 series.’ A determination of the need for registration andor certification of the

’ The series is also available from the American National Standards Institute (ANSI) and the American Society for Quality Control (ASQC) as American National Standards that are identified by a prefix “ Q replacing the prefix “ISO. Each standard of the series is listed under Annex B.

product manufacturer’s quality system program by an independent organization shall be the responsibility of the manufacturer. The detailed documentation demon- strating program compliance shall be available to the puchaser at the manufacturer’s facility. A written sum- mary description of the program utilized by the product manufacturer shall be available to the purchaser upon 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.

17


STD-ASHE B1il=-Ell:-ENGL ]i“l‘l|= K [l75“ll=?El E|5?'=lEl1|Ll El71| —

ASME B16.36-1996

ANNEX A

QUALITY SYSTEM PROGRAM

(This Annex is not part of ASME B16.36-1996 and is included for information only.)

The products manufactured in accordance with thisStandard shall be produced under a quality systemprogram following the principles of an appropriatestandard from the ISO 9000 series.‘ A determinationof the need for registration and/or certi cation of the

1 The series is also available from the American National StandardsInstitute (ANSI) and the American Society for Quality Control(ASQC) as American National Standards that are identi ed by apre x "Q" replacing the pre x “ISO”. Each standard of the seriesis listed under Annex B.

product manufacturer’s quality system program by anindependent organization shall be the responsibility ofthe manufacturer. The detailed documentation demon-strating program compliance shall be available to thepuchaser at the manufacturer’s facility. A written sum-mary description of the program utilized by the productmanufacturer shall be available to the purchaser uponrequest. The product manufacturer is de ned as theentity whose name or trademark appears on the productin accordance with the marking or identi cation require-ments of this Standard.

~

STD-ASME BLb.3b-ENGL 377b m 0757b70 0577335 208 m

ORIFICE FLANGES ASME 816.36-1996

ANNEX B

REFERENCES

(This Annex is an integral part of ASME 816.36-1996 and is placed after the main text for convenience.)

The following is a list of standards and specifications referenced in this Standard showing the year of approval.

ASME Publications (Approved as American National Standards)

ASME B1.20.1-1983 (R1992) ASME B16.5-1996 ASME B16.11-1991

Pipe Threads, General Purpose (Inch) Pipe Flanges and Flanged Fittings Forged Fittings, Socket-Welding and Threaded

ASME Boiler and Pressure Vessel Code, 1995 Edition (Including Addenda through 1995)

Section 1 Power Boilers Section I1 Materials Section I11 Section VIII, Division 1 & 2

Nuclear Power Plant Components Pressure Vessels

International Standards Organization (ISO)

IS0 9000-1: 1994

IS0 9000-2: 1993

Quality management and quality assurance standards - Part 1: Guidelines for selection and use Quality management and quality assurance standard - Part 2: Generic guidelines for the application of IS0 9001, IS0 9002, and IS0 9003 Quality management and quality assurance standards - Part 3: Guidelines for the application of IS0 9001 to the development, supply and maintenance of software Quality systems - Model for quality assurance in design, development, production, istallation, and servicing Quality systems - Model for quality assurance in production and servicing Quality systems - Model for quality assurance in final in- spection and test

IS0 9000-3: 1991

IS0 9001: 1994

IS0 9002: 1994

IS0 9003: 1994


STD-ASME BLl=.Elb-ENGL i=1=u= — |]?5“lb?E| u5?=131.s ans —

ORIFICE FLANGES ASME B16.36-1996

ANNEX BREFERENCES

(This Annex is an integral part of ASME B16.36-1996 and is placed after the main text for convenience.)

The following is a list of standards and speci cations referenced in this Standard showingthe year of approval.

ASME Publications (Approved as American National Standards)ASME Bl.20.l-1983 (R1992) Pipe Threads, General Purpose (Inch)ASME Bl6.5-1996 Pipe Flanges and Flanged FittingsASME B16.l1-1991 Forged Fittings, Socket-Welding and Threaded

ASME Boiler and Pressure Vessel Code, 1995 Edition (Including Addendathrough 1995)Section 1 Power BoilersSection II MaterialsSection III Nuclear Power Plant ComponentsSection VIII, Division 1 & 2 Pressure Vessels

International Standards Organization (ISO)ISO 9000-1: 1994 Quality management and quality assurance standards - Part

1: Guidelines for selection and useISO 9000-2: 1993 Quality management and quality assurance standard - Part

A 2: Generic guidelines for the application of ISO 9001, ISO9002, and ISO 9003

ISO 9000-3: 1991 Quality management and quality assurance standards - Part3: Guidelines for the application of ISO 9001 to the devel-opment, supply and maintenance of software

ISO 9001: 1994 Quality systems - Model for quality assurance in design, de-velopment, production, istallation, and sen/icing

ISO 9002: 1994 Quality systems - Model for quality assurance in produc-tion and servicing

ISO 9003: 1994 Quality systems - Model for quality assurance in nal in-spection and test

19

~~ ~

STD-ASME B L b - 3 b - E N G L L99b 0759b70 05793Lb 144

ASME B16.36- 1996 ORIFICE FLANGES

ASQC

IS0

Publications of the following organizations appear in the above list:

ASME The American Society of Mechanical Engineers 345 East 47th Street, New York, NY 10017-2392

ASME Order Department 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300

American Society for Quality Control P.O. Box 3005, Milwaukee, WI 53201-3005

International Organization for Standardization 1, rue de Varembe, Case postale 56, CH - 1121 Genthe 20, SwitzerlandSuisse

IS0 documents are also available from ANSI. Publications appearing above which have been approved as American National Standards may also be obtained from ANSI.

ANSI American National Standards Institute, Inc. 11 West 42nd St., New York, NY 10036

20


STD.ASl‘1E B].l=-3b-ENGL 1.=|=u= I nvsasvu lJ5?=lElLl= inn I

ASME B16.36-1996 ORIFICE FLANGES

Publications of the following organizations appear in the above list:

ASME The American Society of Mechanical Engineers345 East 47th Street, New York, NY 10017-2392

ASME Order Department22 Law Drive, Box 2300, Fair eld, NJ 07007-2300

ASQC American Society for Quality ControlP.O. Box 3005, Milwaukee, WI 53201-3005

ISO International Organization for Standardization1, rue de Varembé, Case postale 56, CH - 1121 Genéve 20,Switzerland/Suisse

ISO documents are also available from ANSI. Publications appearing above which havebeen approved as American National Standards may also be obtained from ANSI.

ANSI American National Standards Institute, Inc.11 West 42nd St., New York, NY 10036

20

Documents

Asme b16.36 - 1996 - Orifice Flanges