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MSS SP-42-2026

Corrosion-Resistant Gate, Globe, Angle, and Check Valves with Flanged and Butt Weld Ends (Classes 150, 300, and 600)

This Standard Practice covers Classes 150, 300, and 600 corrosion-resistant alloy gate, globe, angle, and check valves with flanged and butt weld ends which are constructed of pressure-containing parts that conform to ASME B16.34. However, materials not included in ASME B16.34 may be used provided the materials comply with the requirements of Section 1.2 and pressure temperature ratings are determined based on the material properties. This Standard Practice covers additional construction requirements for corrosion-resistant valves not covered by ASME B16.34. Such valves are made from alloys whose properties are uniquely suited to the service into which they are placed. Chemical process and cryogenic fluid service constitute two such applications.

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Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [mss]

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