本文件规定了螺栓连接阀盖钢闸门阀门的要求，包括: 特征: -螺栓连接阀盖；-外螺纹和轭内螺纹（仅适用于PN 10、PN 16、150级、PN 25和PN 40的替代品）；-单或双闭孔器；-楔形或平行阀座；-带或不带非金属闭孔或阀座密封；-法兰或对焊端。购买本文件时可获得的所有当前修订均包含在购买本文件中。

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.All current amendments available at time of purchase are included with the purchase of this document.