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ASME B16.34-2017

Valves — Flanged, Threaded, and Welding End

This Standard applies to new construction and covers pressure–temperature ratings, dimensions, tolerances, materials, nondestructive examination requirements, testing, and marking for cast, forged, and fabricated flanged, threaded, and welding end and wafer or flangeless valves of steel, nickel-base alloys, and other alloys shown in Table 1. Wafer or flangeless valves, bolted or throughbolt types, that are installed between flanges or against a flange are treated as flanged-end valves. Alternative rules for NPS 21/2 and smaller valves are given in Mandatory Appendix V.

Content Provider
American Society of Mechanical Engineers [ASME]

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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.