工业阀门. 用螺栓连接阀盖的钢制闸阀

[中文适用范围]： 本文件规定了具有以下特征的螺栓阀盖钢制闸阀的要求： — 螺栓阀盖； — 外螺纹和轭； — 内螺纹（仅适用于 PN 10、PN 16、Class 150、PN 25 和 PN 40）； — 单或双闭塞器； — 楔形或平行阀座； — 带或不带非金属闭塞器或阀座密封； — 法兰或对焊端部。它涵盖的阀门公称尺寸 DN： — 10；15；20；25；32；40；50；65；80；100；125；150；200；250；300；350；400；450；500；600；700；800；900；1000；对应于公称管道尺寸 NPS： — ⅜；½；¾；1；1 ¼；1 ½；2；2 ½；3；4；5；6；8；10；12；14；16；18；20；24；28；32；36；40；并适用于以下压力等级的阀门： — PN 10；16；25；40；63；100； — 150 级；300；600。本文件适用于所有工业用途的螺栓阀盖钢制闸阀。相关应用标准中给出的附加要求可适用于用于更特殊用途（例如用于水工业、化学和石化过程工业、石油和天然气工业）的螺栓阀盖钢制闸阀。 [外文原描述]： This document specifies the requirements for bolted bonnet steel gate vales having the following features: — bolted bonnet; — outside screw and yoke; — inside screw (alternative for PN 10, PN 16, Class 150, PN 25 and PN 40 only); — single or double obturator; — wedge or parallel seating; — with or without non-metallic obturator or seat seals; — flanged or butt-welding ends. It covers valves of the nominal sizes DN: — 10; 15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400; 450; 500; 600; 700; 800; 900; 1 000; corresponding to nominal pipe sizes NPS: — ⅜; ½; ; 1; 1 ¼; 1 ½; 2; 2 ½; 3; 4; 5; 6; 8; 10; 12; 14; 16; 18; 20; 24; 28; 32; 36; 40; and applies to valves of the following pressure designations: — PN 10; 16; 25; 40; 63; 100; — Class 150; 300; 600. This document applies to bolted bonnet steel gate valves used for all industrial applications. Additional requirements given in the relevant application standards can apply to bolted bonnet steel gate valves used for more specific applications (e.g. for the water industry, the chemical and petrochemical process industry, the oil and gas industry).