ASME_B73.2-2016.pdf

AN AM E R IC AN NAT IO NAL STANDARD ASME B73.2-2016Revision of ASME B73.2-2003(R2008)Specification for Vertical In-Line Centrifugal Pumps for Chemical ProcessASME B73.2-2016Revision of ASME B73.2-2003(R2008)Specification forVertical In-LineCentrifugal Pumps forChemical ProcessAN AMERICAN NATIONAL STANDARDTwo Park Avenue New York,NY 10016 USADate of Issuance:April 14,2017This Standard will be revised when the Society approves the issuance of a new edition.There willbe no written interpretations of the requirements of this Standard issued to this edition.Periodically certain actions of the ASME B73 Committee may be published as Cases.Cases arepublished on the ASME Web site under the B73 Committee Page at go.asme.org/B73committee asthey are issued.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages toprovide corrections to incorrectly published items,or to correct typographical or grammatical errorsin codes and standards.Such errata shall be used on the date posted.The B73 Committee Page can be found at go.asme.org/B73committee.There is an option availableto automatically receive an e-mail notification when errata are posted to a particular code or standard.ThisoptioncanbefoundontheappropriateCommitteePageafterselecting“Errata”inthe“PublicationInformation”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 NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput 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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assume any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME 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 EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2017 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.vCommittee Roster.viiCorrespondence With the B73 Committee.viii1Scope.12References.13Alternative Design.34Nomenclature and Definitions.44.1Definition of Terms.44.2Additional Definitions.45Design and Construction Features.45.1Pressure and Temperature Limits.45.2Flanges.45.3Casing.45.4Impeller.55.5Shaft.55.6Shaft Sealing.65.7Driver and Coupling Design.95.8Materials of Construction.145.9Corrosion Allowance.145.10 Direction of Rotation.145.11 Dimensions.145.12 Miscellaneous Design Features.146General Information.176.1Application.176.2Tests and Inspections.206.3Nameplates.217Documentation.217.1General.217.2Requirements.217.3Document Description.217.4Specially Requested Documentation.23Figures1Shaft Sleeve Runout.62Cylindrical Seal Chamber.73Tapered Seal Chamber.84Face Runout.95Register Concentricity.96Packing Box.117Sample Outline Drawing.22Tables1Pump Dimensions.22Universal Cover Dimensions.10iii3Nominal Shaft Extension and Mounting Dimensions for Vertical Solid ShaftP-Base In-Line Pump Motors.124Motor Horsepower Selection.135Pump Material Classification Code.156Material of Construction.167Minimum Requirement for Auxiliary Piping Materials.178Approximate Performance of Standard Pumps(60 Hz).189Approximate Performance of Standard Pumps(50 Hz).1910Minimum Continuous Flow.20Mandatory AppendicesIASME Centrifugal Pump Data Sheet.25IIMechanical Seal and Packing Configuration Codes.34Nonmandatory AppendixAElectronic Data Exchange.36ivFOREWORDThe vertical in-line style of centrifugal pump was introduced for chemical process use.Thesepumps have certain advantages that have led to growing acceptance of this configuration forchemical process applications.In January 1969,in response to this interest,the ManufacturingChemists Association(MCA)requested that the American Na