本文件规定了用于炼油厂和相关应用的重型系列螺栓连接阀盖钢闸阀的要求，在腐蚀、腐蚀和其他工作条件下，可能需要全流道开口、厚壁截面和大阀杆直径。 本文件规定了以下闸阀特性的要求: -螺栓连接阀盖； -外螺纹和轭架； -上升茎； -非上升式手轮； -单门或双门； -楔形或平行阀座； -金属阀座表面； -法兰或对焊端。 它包括公称尺寸为DN的阀门: -25；32；40；50；65；80；100；150；200；250；300；350；400；450；500；600； 对应于公称管道尺寸NPS: -1；1¼；1½；2；2½；3；4；6；8；10；12；14；16；18；20；24； 适用于压力等级名称: -150；300；600；900；1500；2500； 适用于压力PN名称: -16、25、40、63、100、160、250和400。

This document specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions can indicate a need for full port openings, heavy wall sections and large stem diameters. This document sets forth the requirements for the following gate valve features: — bolted bonnet; — outside screw and yoke; — rising stems; — non-rising handwheels; — single or double gate; — wedge or parallel seating; — metallic seating surfaces; — flanged or butt-welding ends. It covers valves of the nominal sizes DN: — 25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600; corresponding to nominal pipe sizes NPS: — 1; 1¼; 1½; 2; 2½; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24; applies for pressure Class designations: — 150; 300; 600; 900; 1 500; 2 500; and applies for pressure PN designations: — 16, 25, 40, 63, 100, 160, 250 and 400.