标准摘要
[中文适用范围]： 本文件规定了法兰管道系统中用作隔离阀和止回阀的闸阀、截止阀、隔膜阀、球阀、旋塞阀和蝶阀等双向金属阀门的面距（FTF）和中心距（CTF）尺寸的基本系列。每个基本系列的面距和中心距均可根据需要与符合等效 EN 或 ASME 法兰系列的配合尺寸法兰一起使用。本文件涵盖以下 PN、等级、DN 和 NPS 值的阀门： — PN 2.5；PN 6；PN 10；PN 16；PN 25；PN 40；PN 63；PN 100；PN 160；PN 250；PN 320；PN 400； — 125 级；150 级；250 级；300 级；600 级；900 级；1500 级； 2500 级；— DN 10；DN 15；DN 20；DN 25；DN 32；DN 40；DN 50；DN 65；DN 80；DN 100；DN 125；DN 150；DN 200；DN 250；DN 300；DN 350；DN 400；DN 450；DN 500；DN 600；DN 650；DN 700；DN 750；DN 800；DN 900；DN 1000；DN 1050；DN 1200；DN 1400；DN 1600；DN 1800；DN 2000；— 对应公称尺寸 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；36；40；42；48；56；64；72；80。注：有关 DN 和 NPS 之间的关系，请参阅附件 B。 [外文原描述]： This document specifies the basic series of face-to-face (FTF) and centre-to-face (CTF) dimensions for two-way metal valves of the gate, globe, diaphragm, ball, plug, butterfly design types used as isolating and check valves in flanged pipe systems. Each basic series of face-to-face and centre-to-face dimensions can be used as required with flanges of mating dimensions conforming to the equivalent EN or ASME flange series. This document covers valves with the following PN, Class, DN and NPS values: — PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400; — Class 125; Class 150; Class 250; Class 300; Class 600; Class 900; Class 1 500; Class 2 500; — DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 650; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1 050; DN 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000; — corresponding to nominal 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; 36; 40; 42; 48; 56; 64; 72; 80. NOTE See Annex B for the relationship between DN and NPS.
英文名称Metal valves for use in flanged pipe systems — Face-to-face and centre-to-face dimensions