GSO ISO 28921-1:2024
工业阀门 低温应用隔离阀 第1部分：设计、制造和生产测试

Industrial valves — Isolating valves for low-temperature applications — Part 1: Design, manufacturing and production testing

标准号

GSO ISO 28921-1:2024

发布

2024年

发布单位

GSO

当前最新

GSO ISO 28921-1:2024

 

 

适用范围

This document specifies requirements for design, dimensions, material, fabrication and production testing of gate, globe, ball/plug and butterfly valve design types used as isolation valves and check valves for low-temperature applications. This document is applicable to isolation valves for use in low and cryogenic temperature service where the design low-temperature service is -50 °C down to –196 °C. This document does not apply to valves for cryogenic services, designed in accordance with ISO 21011, used with cryogenic vessels. Where the requirements of this document vary from those given in the valve product standards, the requirements of this document apply. This document is applicable to valves with body, bonnet, bonnet extension or cover made of metallic materials. This document is applicable to: —    valves of nominal sizes DN: 10; 15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400; 450; 500; 600; 650; 700; 750; 800; 850; 900; 950; 1 000; 1 050; 1 200; 1 350; 1 400; 1 500; 1 600; 1 650; 1 800, —    corresponding to nominal pipe sizes NPS: ⅜; ½; ¾; 1; 1 ¼; 1 ½; 2; 2 ½; 3; 4; 5; 6; 8; 10; 12; 14; 16; 18; 20; 24; 26; 28; 30; 32; 34; 36; 38; 40; 42; 48; 54; 56; 60; 64; 66; 72, and applies to pressure designations: —    PN 16; 25; 40; 100; 160; 250; 400, —    Class 150; 300; 600; 800; 900; 1 500; 2 500. NOTE       Not all type and size combination are available in all pressure ratings. This document does not apply to safety valves and control valves.

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