1 Scope
This document specifies requirements for design, dimensions, material, fabrication
and production testing of lined metal quarter turns valves (plug valves, butterfly
valves, ball valves) and check valves with flanged, wafer and wafer lug body types.
It covers valves of the nominal sizes, DN:
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— 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 750, 800, 900, 1 000, 1 200;
corresponding to nominal pipe sizes, NPS 1/2 to NPS 48, and applies to pressure designations:
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— PN 10, 16, 25, 40;
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— Class 150, 300.