Cast Copper Alloy Threaded Fittings

Classes 125 and 250

AN A MERICAN NA TIONAL S T AND ARD

ASME B16.15-2018

(Revision of ASME B16.15–2013)

ASME B16.15-2018

(Revision of ASME B16.15–2013)

Cast Copper

Alloy Threaded Fittings

Classes 125 and 250

AN AMERICAN NATIONAL STANDARD

Two Park Avenue • New York, NY • 10016 USA

Date of Issuance: October 12, 2018

The next edition of this Standard is scheduled for publication in 2023.

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The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990

Copyright © 2018 by

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

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CONTENTS

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v

Committee Roster vii

Correspondence With the B16 Committee viii

Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x

List of Changes in Record Number Order xi

1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3 Pressure–Temperature Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

4 Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

5 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

6 Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

7 Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

8 Ribs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

9 Surface Finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

10 Fitting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

11 Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

12 Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mandatory Appendix

I References 17

Nonmandatory Appendix

10.1.2-6 Dimensions of Reducers, Closed and Open Pattern Return Bends, and 45-deg Y Branches (Straight

Sizes) — Class 125 14

10.1.2-7 Dimensions of 90-deg and 45-deg Street Elbows — Class 125 15

10.1.2-8 Dimensions of 90-deg Elbows, Tees, Crosses, 45-deg Elbows, and Couplings (Straight Sizes) — Class

250 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

11.3-1 Inspection Tolerances, Center-to-End and Center-to-Center 16

FOREWORD

As early as the spring of 1921, the consolidation and further development of threaded and flanged fittings standards in force in the United States seemed desirable. To meet this need, the American Standards Association (ASA) [now the American National Standards Institute (ANSI)] authorized the organization of a Sectional Committee on the Standardization of Pipe Flanges and Flanged Fittings (B16), with the Heating, Piping, and Air Conditioning Contractors' National Association (now known as the Mechanical Contractors Association of America), the Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), and The American Society of Mechanical Engineers (ASME) acting as joint sponsors.

In June 1927, the MSS appointed a committee on Nonferrous Screw Fittings for the purpose of developing standards for products commonly designated as threaded pipe fittings of brass, bronze, and other nonferrous materials. At the time, brass threaded fittings were furnished from a number of different patterns with wide variations in dimensions and weights.

MSS SP-10 for 125-lb bronze screwed fittings and MSS SP-11 for 250-lb bronze screwed fittings were developed and adopted by the MSS in September 1930. The lighter fittings were patterned after malleable iron threaded fittings, then standardized in ASA B16c, while the heavier products were patterned after the cast iron threaded fittings covered by ASA B16d. Thus, a practice was standardized that had been found satisfactory in the valve and fittings industry for many years. Following the publication of revised editions in 1941 and 1943, SP-10 was submitted to Subcommittee No. 2 of ASA Sectional Committee B16 for adoption as an American Standard. Final approval of that edition was granted on January 23, 1947, with the designation ASA B16.15. A reaffirmation of the Standard was granted in 1952, and a complete revision

updating the Standard was approved by ASA on March 25, 1958.

After revision in 1944, SP-11 was submitted to Subcommittee No. 2 in August 1947, and ASA granted the approval of B16.17 on April 6, 1949.

In 1961, Subcommittee No. 2 reviewed the two Standards and noted that the historical reason for their separate existence no longer applied. Accordingly, the two were combined into ASA B16.15 with final ASA approval granted on February 6, 1964.

In 1969, the document was reviewed by Subcommittee No. 2, and minor changes were proposed. Final ANSI approval was granted on April 14, 1971.

In 1977, the MSS submitted a proposed revision to Subcommittee B (formerly No. 2) for B16 review and approval. Changes included the addition of metric (SI) units and editorial updating. ANSI granted final approval on December 4, 1978.

In 1982, American National Standards Committee B16 was reorganized as the ASME B16 Committee, operating under procedures accredited by ANSI. A revision, following regular 5-yr review by Subcommittee B, involved rationalization of metric equivalent dimensions and updating of reference standards. Following approval within ASME, ANSI approval was granted on July 30, 1985, with the designation ANSI/ASME B16.15-1985.

In 1994, and again in 2004, the document was reaffirmed.

In 2005, Subcommittee B of the ASME B16 Committee changed the title to Cast Copper Alloy Threaded Fittings, a section on leakage capacity was added, and nominal size (DN) according to ISO 6078 was addressed as SI values were positioned in the main text and U.S. Customary values were positioned in Mandatory Appendix I. The reference for gaging internal fitting threads was made clearer by using the wording from ASME B1.20.1, Pipe Threads, General Purpose (Inch). Many clarifying and editorial revisions were made to improve the text. After approval by ASME, ANSI approval was granted on August 25, 2006, with the designation ASME B16.15-2006.

In 2011, references to ASME standards were revised to no longer list specific edition years; the latest edition of ASME publications applies unless stated otherwise. Materials manufactured to other editions of the referenced ASTM standards have been permitted to be used to manufacture fittings meeting the requirements of this Standard as long as the fitting manufacturer verifies the material meets the requirements of the referenced edition. Following approval by the ASME B16 Standards Committee, the revision to the 2006 edition was approved as an American National Standard by ANSI on August 9, 2011, with the designation ASME B16.15-2011.

In the 2013 edition, section 7 was revised to require threads and gaging practices to be as per and identical with ASME B1.20.1 and other B16 standards. Following approval by the ASME B16 Standards Committee, approval as an American National Standard was given by ANSI on July 29, 2013, with the designation ASME B16.15-2013.

In this 2018 edition, the U.S. Customary tables formerly in Mandatory Appendix I have been merged with the SI tables in the main text; the tables and figure have been redesignated, Mandatory Appendix I has been deleted, and the cross- references have been updated accordingly. In addition, section 10 has been revised to add clarification to the wall thickness requirements in the transitional area of a reducing fitting in which there is a change from one size of end connection to another, and all reference standards in what was formerly Mandatory Appendix II have been updated. Following approval by the ASME B16 Standards Committee, approval as an American National Standard was given by ANSI on August 3, 2018, with the new designation ASME B16.15-2018.

ASME B16 COMMITTEE

Standardization of Valves, Flanges, Fittings, and Gaskets

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

STANDARDS COMMITTEE OFFICERS

R. Bojarczuk, Chair

C. Davila, Vice Chair

C. R. Ramcharran, Secretary

STANDARDS COMMITTEE PERSONNEL

A. Appleton, Alloy Stainless Products Co., Inc.

1. E. Barker, Dezurik Water Controls

2. Barron, Ward Manufacturing, LLC

D. C. Bayreuther, Metso Automation

W. Bedesem, Consultant

R. Bojarczuk, ExxonMobil Research and Engineering Co.

A. Cheta, Qatar Shell GTL

M. Clark, Consultant

G. A. Cuccio, Capitol Manufacturing Co.

J. D'Avanzo, Fluoroseal Valves

C. Davila, Crane Energy

K. S. Felder, Valero Energy

D. Frikken, Becht Engineering Co.

D. Hunt, Jr., Fastenal

G. Jolly, Samshin Ltd.

E. J. Lain, Exelon Nuclear

T. A. McMahon, Emerson Process Management

R. C. Merrick, Fluor Enterprises

M. Nayyar, NICE

W. H. Patrick, The Dow Chemical Co.

D. Rahoi, Consultant

1. R. Ramcharran, The American Society of Mechanical Engineers

2. F. Reid, VSP Technologies

R. Schmidt, Canadoil

J. Tucker, Flowserve

F. Volgstadt, Volgstadt & Associates, Inc.

F. Feng, Delegate, China Productivity Center for Machinery National Technical Committee

R. Barnes, Contributing Member, Anric Enterprises, Inc.

P. V. Craig, Contributing Member, Jomar Group

B. G. Fabian, Contributing Member, Pennsylvania Machine Works

A. G. Kireta, Jr., Contributing Member, Copper Development Association, Inc.

SUBCOMMITTEE B — THREADED FITTINGS (EXCEPT STEEL), FLANGES, AND FLANGED FITTINGS

D. Hunt, Jr., Chair, Fastenal

K. Barron, Vice Chair, Ward Manufacturing, LLC

J. Oh, Secretary, The American Society of Mechanical Engineers

W. Bliss, Tyler Pipe Company

M. Clark, Consultant

M. C. Coffey, Ward Manufacturing, LLC

J. R. Holstrom, Val-Matic Valve & Manufacturing Corporation

W. LeVan, Cast Iron Soil Pipe Institute

G. L. Simmons, Charlotte Pipe & Foundry

G. T. Walden, Wolseley

A. A. Knapp, Contributing Member, A. Knapp & Associates

CORRESPONDENCE WITH THE B16 COMMITTEE

General. ASME Standards are developed and maintained with the intent to represent the consensus of concerned interests. As such, users of this Standard may interact with the Committee by requesting interpretations, proposing revisions or a case, and attending Committee meetings. Correspondence should be addressed to:

Secretary, B16 Standards Committee

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New York, NY 10016-5990

https://go.asme.org/Inquiry

Proposing Revisions. Revisions are made periodically to the Standard to incorporate changes that appear necessary or desirable, as demonstrated by the experience gained from the application of the Standard. Approved revisions will be published periodically.

The Committee welcomes proposals for revisions to this Standard. Such proposals should be as specific as possible, citing the paragraph number(s), the proposed wording, and a detailed description of the reasons for the proposal, including any pertinent documentation.

Proposing a Case. Cases may be issued to provide alternative rules when justified, to permit early implementation of an approved revision when the need is urgent, or to provide rules not covered by existing provisions. Cases are effective immediately upon ASME approval and shall be posted on the ASME Committee web page.

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Attending Committee Meetings. The B16 Standards Committee regularly holds meetings and/or telephone confer- ences that are open to the public. Persons wishing to attend any meeting and/or telephone conference should contact the Secretary of the B16 Standards Committee.

ASME B16.15-2018 SUMMARY OF CHANGES

Following approval by the ASME B16 Committee and ASME, and after public review, ASME B16.15-2018 was approved by the American National Standards Institute on August 3, 2018.

In ASME B16.15-2018, the U.S. Customary tables formerly in Mandatory Appendix I have been merged with the SI tables in the main text; the tables and figure have been redesignated, Mandatory Appendix I has been deleted, and the cross- references have been updated accordingly. In addition, this edition includes the following changes identified by a margin note, (18). The Record Numbers listed below are explained in more detail in the “List of Changes in Record Number Order” following this Summary of Changes.

LIST OF CHANGES IN RECORD NUMBER ORDER

Record Number Change

12-581 Revised section 10 in its entirety to clarify the wall thickness requirements in the transitional area of a reducing fitting in which there is a change from one size of end connection to another.

18-942 Updated references in Mandatory Appendix I, formerly Mandatory Appendix II.

ASME B16.15-2018

CAST COPPER ALLOY THREADED FITTINGS

Classes 125 and 250

1. SCOPE

   This Standard covers cast Classes 125 and 250 copper alloy threaded pipe fittings with provisions for substi- tuting wrought copper alloys for plugs, bushings, caps, and couplings in small sizes. This Standard includes the following:

   1. pressure–temperature ratings

   2. size and method of designating openings of reduc- ing pipe fittings

   3. marking requirements

   4. minimum requirements for casting quality and materials

   5. dimensions and tolerances in SI (metric) and U.S.

      Customary units

   6. threading requirements

   7. pressure test requirements

      
      

2. GENERAL

1. 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. 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.

   
   

2. References

   Standards and specifications containing provisions to the extent referenced herein constitute requirements of this Standard. These referenced documents are listed in Mandatory Appendix I.

   
   

3. Quality Systems

   Requirements relating to the product manufacturer's Quality System Programs are described in Nonmandatory Appendix A.

   
   

4. Denotation

   1. Pressure Rating Designation. Class followed by a dimensionless number is the designation for pressure– temperature ratings, e.g., Class 125 and Class 250.

   2. Size. NPS followed by a dimensionless number is the designation for nominal fittings size, e.g., NPS 2.

5. Time of Purchase, Manufacture, or Installation

   The pressure–temperature ratings in this Standard are applicable upon its publication to all fittings within its scope that otherwise meet its requirements. For unused fittings maintained in inventory, the manufacturer of the fittings may certify conformance to this edition provided it can be demonstrated that all requirements of this edition have been met. Where such components were installed in accordance with the pressure–tempera- ture ratings of an earlier edition of this Standard, those ratings are applicable except as may be governed by the applicable code or regulation.

   
   

6. User Accountability

   This Standard cites responsibilities that are to be assumed by the fitting user in the areas of the temperature at which the pressure rating is taken.

   
   

7. Service Conditions

Criteria for selection of materials suitable for particular fluid service are not within the scope of this Standard.

1. PRESSURE–TEMPERATURE RATINGS

   1. General

      Pressure–temperature ratings for these pipe fittings are shown in Table 3.1-1. All pressures are gage.

      
      

   2. Rating

Pressure–temperature ratings are independent of the contained fluid and are the maximum allowable pressures at the tabulated temperatures. Intermediate ratings may be obtained by linear interpolation between the tempera- tures shown.

The temperature shown for the corresponding pressure rating shall be the material temperature of the pressure- retaining structure. It may be assumed that the material temperature is the same as the fluid temperature. Use of a pressure rating at a material temperature other than that of the contained fluid is the responsibility of the user and subject to the requirements of any applicable codes and regulations.

1