ASMEB16.34-2020 (Revision of ASMEB16.34-2017) Valves - Flanged Threaded, and Welding End AN AMERICAN NATIONAL STANDARD The American Society of Mechanical Engineers CF ASME B16.34-2020 (Revision of ASME B16.34-2017) Valves Flanged Threaded, and Welding End AN AMERICAN NATIONAL STANDARD H The American Society of Mechanical Engineers TwoParkAvenue:NewYork,NY 10016USA Date of Issuance: January 29, 2021 The next edition of this Standard is scheduled for publication in 2024 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 website Errata to codes and standards may be posted on the AsME website under the Committee Pages to provide corrections to on the date posted. The Committee Pages can be found at http://cstools.asme.org/. There is an option available to automatically receive an e-mail Page after selecting "Errata" in the "Publication Information" section 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 for additional public input from industry, academia, regulatory agencies, and the public-at-large. 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 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 Two Park Avenue, New York, NY 10016-5990 Copyright 2021 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All rights reserved Printed in U.S.A.