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:
— 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:
— PN 10, 16, 25, 40;
— Class 150, 300.st edition 2017-05 Industrial valves — Lined metal quarter turn and check valves for chemical process and related industries Robinetterie industrielle — Robinets quart de tour et clapets de non- retour métalliques revêtus pour les industries de procédé chimique et industries connexes Reference number ISO 19240:2017(E) ？ ISO 2017 ISO 19240:2017(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO