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ASME B16.34-2017
M00050611
New product
ASME B16.34-2017 Valves - Flanged, Threaded and Welding End
standard by ASME International, 08/23/2017
Full Description
1 Scope1.1 General
This Standard applies to new construction and covers pressure-temperature ratings, dimensions, tolerances, materials, nondestructive examination requirements, testing, and marking for cast, forged, and fabricated flanged, threaded, and welding end and wafer or flangeless valves of steel, nickel-base alloys, and other alloys shown in Table 1. Wafer or flangeless valves, bolted or through-bolt types, that are installed between flanges or against a flange are treated as flanged-end valves. Alternative rules for NPS 2 and smaller valves are given in Mandatory Appendix V.
1.2 Applicability
1.2.1 Standards and Specifications. Standards and specifications adopted by reference in this Standard and the names and addresses of the sponsoring organizations are shown in Mandatory Appendix VIII. It is not considered practical to refer to a specific edition of each of the standards and specifications in the individual clause references. Instead, the specific edition references are included in Mandatory Appendix VIII. A product made in conformance with a prior edition of reference standards and in all other respects conforming to this Standard shall be considered to be in conformance even though the edition reference may have been changed in a subsequent revision of this Standard.
1.2.2 Time of Purchase, Manufacture, or Installation. The pressure-temperature ratings included in this Standard are applicable, upon publication, to all valves covered within its scope that meet its requirements. For unused valves, valves that have been maintained in inventory, the manufacturer may certify conformance to this edition provided that it can be demonstrated that all requirements of this edition have been met. However, where such components were installed under the pressure-temperature ratings of an earlier edition of ASME B16.34, those ratings shall apply except as may be governed by an applicable Code or regulation.
1.2.3 User Accountability. This Standard cites duties and responsibilities that are to be assumed by the valve user in the areas of, for example, application, installation, system hydrostatic testing, operation, and material selection.
1.2.4 Quality Systems. Requirements relating to a valve manufacturer's Quality System Program are described in Nonmandatory Appendix C.
1.2.5 Relevant Units. This Standard states values in both SI (Metric) and U.S. Customary units. These systems of units are to be regarded separately as standard. Within the text, the U.S. Customary units are shown in parentheses or in separate tables that appear in Mandatory Appendix VII. The values stated in each system are not exact equivalents; therefore, it is required that each system of units be used independently of the other. Combining values from the two systems constitutes nonconformance with the Standard.
1.3 Selection of Valve Types and Material Service Conditions
Criteria for selection of valve types and materials suitable for particular fluid service are not within the scope of this Standard.
1.4 Convention
For determining conformance with this Standard, the convention for fixing significant digits where limits (maximum and minimum values) are specified shall be as defined in ASTM E29. This requires that an observed or calculated value be rounded off to the nearest unit in the last right-hand digit used for expressing the limit. Decimal values and tolerances do not imply a particular method of measurement.
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Valves — Flanged, Threaded, and Welding End
AN A MERICAN NA TIONAL S T AND ARD
ASME B16.34-2017
(Revision of ASME B16.34-2013)
ASME B16.34-2017
(Revision of ASME B16.34-2013)
Valves — Flanged, Threaded, and Welding End
AN AMERICAN NATIONAL STANDARD
Date of Issuance: August 23, 2017
The next edition of this Standard is scheduled for publication in 2020.
ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Periodically certain actions of the ASME B16 Committee may be published as Cases. Cases and interpretations are published on the ASME Web site under the Committee Pages at https://cstools.asme.org/ as they are issued.
Errata to codes and standards may be posted on the ASME Web site under the Committee Pages to provide corrections to incorrectly published items, or to correct typographical or grammatical errors in codes and standards. Such errata shall be used on the date posted.
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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 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.
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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 Two Park Avenue, New York, NY 10016-5990
Copyright © 2017 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights reserved Printed in U.S.A.
CONTENTS
Foreword vii
Committee Roster ix
Correspondence With the B16 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Introduction xiii
Summary of Changes xiv
List of Changes in Record Number Order xvi
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Pressure–temperature Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Nominal Pipe Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pressure Testing 11
Requirements for Special Class Valves 12
Mandatory Appendices
Radiography Examination: Procedure and Acceptance Standards 121
Magnetic Particle Examination: Procedure and Acceptance Standards 123
Liquid Penetrant Examination: Procedure and Acceptance Standards 124
Ultrasonic Examination: Procedure and Acceptance Standards 125
Requirements for Limited Class Valves 126
Basis Equations for Minimum Wall Thickness 129
Pressure–temperature Ratings: U.S. Customary Units 131
References 210
Nonmandatory Appendices
A | Relationship Between Nominal Pipe Size and Inside Diameter . . . . . . . . . . . . . . . . . . . . . . . . . | 214 |
B | Method Used for Establishing Pressure–temperature Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . | 216 |
C | Quality System Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 224 |
Figures | ||
1 | Method of Designating Location of Auxiliary Connections When Specified . . . . . . . . . . . . . . . . . | 14 |
2 | Butterfly Valve Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 15 |
3 | Thread Length for Auxiliary Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 16 |
4 | Bosses for Auxiliary Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 16 |
5 | Socket Welding for Auxiliary Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 17 |
6 | Butt Welding for Auxiliary Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 17 |
7 | Gate Body (Pressure Seal Bonnet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 18 |
8 | Y Pattern Globe Body (Pressure Seal Bonnet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 18 |
9 | Angle Body (Pressure Seal Bonnet): Bonnet Same As Y Pattern Globe . . . . . . . . . . . . . . . . . . . . | 19 |
10 | Elbow Down (Pressure Seal Bonnet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 19 |
11 | Gate Body (Flanged Bonnet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 20 |
12 | Globe Body (Flanged Bonnet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 20 |
13 | Butterfly Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 21 |
14 | Plug Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 21 |
15 | Conduit Gate Body (Pressure Seal Bonnet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
16 | Dished Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
17 | Flat Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
V-1 | Limited Class Stress Area Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 127 |
Tables 1 | Material Specification List: Applicable ASTM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 23 |
2-1.1 | Ratings for Group 1.1 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 28 |
2-1.2 | Ratings for Group 1.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 30 |
2-1.3 | Ratings for Group 1.3 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 32 |
2-1.4 | Ratings for Group 1.4 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 34 |
2-1.5 | Ratings for Group 1.5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 |
2-1.6 | Ratings for Group 1.6 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 37 |
2-1.7 | Ratings for Group 1.7 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 38 |
2-1.8 | Ratings for Group 1.8 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 40 |
2-1.9 | Ratings for Group 1.9 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 42 |
2-1.10 | Ratings for Group 1.10 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 44 |
2-1.11 | Ratings for Group 1.11 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 46 |
2-1.12 | Ratings for Group 1.12 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 48 |
2-1.13 | Ratings for Group 1.13 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 50 |
2-1.14 | Ratings for Group 1.14 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 52 |
2-1.15 | Ratings for Group 1.15 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 54 |
2-1.16 | Ratings for Group 1.16 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 56 |
2-1.17 | Ratings for Group 1.17 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 58 |
2-1.18 | Ratings for Group 1.18 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 60 |
2-2.1 | Ratings for Group 2.1 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 62 |
2-2.2 | Ratings for Group 2.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 64 |
2-2.3 | Ratings for Group 2.3 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 66 |
2-2.4 | Ratings for Group 2.4 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 67 |
2-2.5 | Ratings for Group 2.5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 69 |
2-2.6 | Ratings for Group 2.6 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 71 |
2-2.7 | Ratings for Group 2.7 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 73 |
2-2.8 | Ratings for Group 2.8 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 75 |
2-2.9 | Ratings for Group 2.9 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 76 |
2-2.10 | Ratings for Group 2.10 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 78 |
2-2.11 | Ratings for Group 2.11 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 80 |
2-2.12 | Ratings for Group 2.12 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 82 |
2-3.1 | Ratings for Group 3.1 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 84 |
2-3.2 | Ratings for Group 3.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 85 |
2-3.3 | Ratings for Group 3.3 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 86 |
2-3.4 | Ratings for Group 3.4 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 88 |
2-3.5 | Ratings for Group 3.5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 89 |
2-3.6 | Ratings for Group 3.6 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 91 |
2-3.7 | Ratings for Group 3.7 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 93 |
2-3.8 | Ratings for Group 3.8 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 94 |
2-3.9 | Ratings for Group 3.9 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 96 |
2-3.10 | Ratings for Group 3.10 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 98 |
2-3.11 | Ratings for Group 3.11 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 99 |
2-3.12 | Ratings for Group 3.12 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 100 |
2-3.13 | Ratings for Group 3.13 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 101 |
2-3.14 | Ratings for Group 3.14 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 102 |
2-3.15 | Ratings for Group 3.15 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 103 |
2-3.16 | Ratings for Group 3.16 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 105 |
2-3.17 | Ratings for Group 3.17 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 107 |
2-3.18 | Ratings for Group 3.18 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 108 |
2-3.19 | Ratings for Group 3.19 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 110 |
3A | Valve Body Minimum Wall Thickness, tm, mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 112 |
3B | Valve Body Minimum Wall Thickness, tm, in. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 116 |
4 | Minimum Wall Thickness for Socket Welding and Threaded Ends . . . . . . . . . . . . . . . . . . . . . . . | 120 |
I-1 | Acceptance Criteria for Thickness Per para. I-2(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 122 |
I-2 | Acceptance Criteria for Thickness Per para. I-2(b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 122 |
I-3 | Acceptance Criteria for Thickness Per para. I-2(c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 122 |
V-1 | Material Coefficient, y . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 127 |
VI-1 | Basis Equations for Minimum Wall Thickness, mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 129 |
VI-2 | Basis Equations for Minimum Wall Thickness, in. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 130 |
VII-2-1.1 | Ratings for Group 1.1 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 132 |
VII-2-1.2 | Ratings for Group 1.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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