标准摘要
[中文适用范围]: 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,在这些应用中,腐蚀、侵蚀和其他使用条件可能表明需要全端口开口、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: ——螺栓连接的阀盖; ——外部螺钉和轭; ——上升的茎; ——非上升式手轮; ——单门或双门; ——楔形或平行座位; ——金属座面; ——法兰或对焊端部。 它涵盖公称尺寸 DN: ——25 的阀门; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600;对应于标称管道尺寸 NPS: ——1; 1/4; 1.5; 2; 2.5; 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。 [外文原描述]: 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.
英文名称Bolted bonnet steel gate valves for the petroleum, petrochemical and allied industries