_API_6D_2002.pdf

API Standard 6D/ISO 14313:1999American Petroleum InstituteAPI FOREWORDThis standard is under the jurisdiction of the API Standards Subcommittee on Valves and WellheadEquipment(API C1/SC6).This API standard is identical with the English version of ISO 14313:1999.ISO14313 was prepared by Technical Committee ISO/TC 67 Materials,equipment and offshore structures forpetroleum and natural gas industries,SC 2,Pipeline transportation systems.For the purposes of this standard,the following editorial changes have been made:a)Deletion of ISO Forward from the international standard,replaced by API Special Notes andForward:b)A national informative annex(Annex E-API Monogram)has been included giving guidance tousers.This standard shall become effective on the date printed on the cover but may be used voluntarily fromthe date of distribution.API publications may be used by anyone desiring to do so.Every effort has been made by the Institute toassure the accuracy and reliability of the data contained in them;however,the Institute makes norepresentation,warranty,or guarantee in connection with this publication and hereby expresslydisclaims any liability or responsibility for loss or damage resulting from its use or for the violation of anyfederal,state,or municipal regulation with which this publication may conflict.Suggested revisions are invited and should be submitted to the Upstream Segment,APl,1220 L Street,NW,Washington,D.C.20005.iiAmerican Petroleum InstituteAPI Standard 6D/ISO 14313:1999Contents1 Scope.12 Normative references.13 Terms and definitions.34 Symbols and abbreviations.64.1Symb0ls.64.2 Abbreviations.65 Valve types and configurations.75.1 Valve types.75.2 Valve configurations.76 Design.196.1 Pressure and temperature rating.196.2 Sizes.206.3 Face-to-face and end-to-end dimensions.206.4 Minimum-bore full-opening valves.336.5 Valve operation.336.6 Pigging.336.7 Valve ends.346.8 Pressure relief.346.9 Bypass,drain and vent connections.346.10 Handwheels and wrenches(levers).356.11 Locking devices.35iii