ASME_B16-14-1991.pdf

Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.1 AN AMERICAN NATIONAL STANDARD Ferrous Pipe Plugs,Bushings,and Locknuts with Pipe Threads ASME B16.141991(REVISION OF ANSI B16.14-1983)The American Society of Mechanical Engineers 345 East 47th Street,New York,N.Y.10017-Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:February 15,1991 The 1991 edition of this Standard is being issued with an automatic addenda subscription service.The use of an addenda allows revisions made in re-sponse 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 1996.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(s)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 vol-unteers.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.Copyright 0 1991 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A.Copyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORD(This Foreword is not part of ASME B16.14-1991.)In 1921,the American Engineering Standards Committee later the American Standards Association(ASA)organized Sectional Committee B16 to unify and develop standards for pipe flanges and fittings.Cosponsors of the B16 Committee were the American Society of Mechanical Engineers(ASME),the Heating and Piping Contractors National Association now Mechanical Contractors Association of America(MCAA),and the Manufacturers Standardization Society of the Valve and Fitting Industry(MSS).Cosponsors were later designated as Co-Secretariat organizations.Threaded fittings were also included in the scope of the B16 Committee and Subcommittee 2(now Subcommittee B)was made responsible for threaded fittings other than steel.The American Standard for Pipe Plugs was originally published as ASA B16e2-1936.It had been developed by Subcommittee 2 from material assembled and published by MSS as a standard practice in April,1929.From the beginning,pipe plugs have been made with the American Standard Taper Pipe Thread but the design of the square heads necessary to screw them into fittings or any taped hole has been a matter of manufacturers and users individual design.However,the use of pipe plugs soon broadened and they came to be employed in many other service applications,e.g.,automotive and industrial machinery.Accordingly,it was natural for the dimensions of the square heads and the sockets to conform to standard open wrench sizes and to maximum dimensions of standard hot rolled steel bars.Pipe bushing and locknut dimensions were originally included in ASA B16c-1939,American Standard for 150 lb Malleable Iron Scre