DIN EN ISO 15761:2003-07

This International Standard specifies the requirements for a series of compact steel gate, globe and check valves for petroleum and natural gas industry applications. It is applicable to valves of nominal sizes DN 8, 10, 15, 20, 25, 32, 40, 50, 65, 80 and 100, corresponding to different (nominal pipe sizes) NPS and to pressure designations of classes 150, 300, 600, 800 and 1500. This International Standard is applicable to valve end flanges in accordance with ASME B16.5 and valve body ends having tapered pipe threads to ISO 7-1 or ASME B1.20.1. It is applicable to extended body construction in sizes 15 smaller DN smaller 50 and pressure designations of class 800 and 1500, and to bellows and bellows assembly construction as may be adaptable to gate or globe valves. It covers bellows stem seal-type testing requirements.