本文件规定了用作低温应用隔离阀和止回阀的闸阀、截止阀、球阀/旋塞阀和蝶阀设计类型的设计、尺寸、材料、制造和生产测试要求。 本文件适用于设计低温环境为-50°C至-196°C的低温和低温环境中使用的隔离阀。 本文件不适用于根据ISO 21011设计的用于低温容器的低温阀门。 如果本文件的要求与阀门产品标准中给出的要求不同，则本文件的要求适用。 本文件适用于阀体、阀盖、阀盖延伸或阀盖由金属材料制成的阀门。 本文件适用于: -公称尺寸DN的阀门: 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, -对应标称管道尺寸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, 并适用于压力名称: -PN 16；25; 40; 100; 160; 250; 400, -150级；300; 600; 800; 900; 1 500; 2 500. 注:并非所有类型和尺寸组合都适用于所有压力额定值。 本文件不适用于安全阀和控制阀。

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.