ASME B16.34-2004 VALVES -FLANGED,THREADED,AND WELDING END

ASME B16.34-2004 VALVES -FLANGED,THREADED,AND WELDING END 1 sCOPE 1.1 General This Standard applies to new construction and coverspressure-temperature ratings, dimensions, tolerances,materials, nondestructive examination requirements,testing, and marking for cast, forged,and fabricatedflanged, threaded, and welding end and wafer orflangeless valves of steel,nickel-base alloys, and otheralloys shown in Table 1. Wafer or flangeless valves,bolted or through-bolt types, that are installed betweenflanges or against a flange are treated as flanged-endvalves. Alternative rules for NPS 21/ and smaller valvesare given in Mandatory Appendix V. 1.2 Applicability 1.2.1 Standards and Specifications.Standards andspecifications adopted by reference in this Standard andthe names and addresses of the sponsoring organiza-tions are shown in Mandatory Appendix VIII. It is notconsidered practical to refer to a specific edition of eachof the standards and specifications in the individualclause references.Instead, the specific edition referencesare included in Mandatory Appendix VII.A productmade in conformance with a prior edition of referencestandards and in all other respects conforming to thisStandard shall be considered to be in conformance eventhough the edition reference may have been changed ina subsequent revision of this Standard.