截止阀的启闭件是塞形的阀瓣，密封面呈平面或锥面，阀瓣沿流体的中心线作直线运动。阀杆的运动形式，有升降杆式（阀杆升降，手轮不升降），也有升降旋转杆式（手轮与阀杆一起旋转升降，螺母设在阀体上）。截止阀只适用于全开和全关，不允许作调节和节流。 执行标准 Administer Standard | 设计与制造 Design and Manufacture | 结构长度
Face To Face | 法兰尺寸
Flange Dimension | 压力-温度 Pressure Temperature Lating | 试验-检验 Inspection And Test | | GB122235 | GB12221 | GB9113 JB79 | GB9131 | GB/T13927 JB/T9092 | 压力试验 Pressure Test | 公称压力NominalPressure | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 | | 强度试验 Shell Test | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 24.0 | | 水密封试验 Water Seal Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 18.0 | | 上密封试验Backseat Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 18.0 | | 气密封试验 Air Seal Test | 0.5-0.7 | 主要零件材料及性能 Main Part Materials and Property | 体、盖、板 Body Cover Disc | 阀杆
Stem | 密封面 Sealing Face | 垫片
Sealing Shim | 填料
Packing | 工作温度℃ Working Temperature | 适用介质Suitable Medium | | | WCB | 2Cr13 | 13Cr STL 木体材料 With Body Material 尼龙 Nylon | 增强柔性石墨 Enhanced Flexible Graphite 13Cr/柔性石墨 1Cr13/Flexible Graphite 08软钢 08 Soft Steal 0Cr18Ni9Ti 0Cr17Ni12Mo2Ti XD550F(T) PTFE | 柔性石墨 增强柔性石墨 Flexible Graphite Enhanced Flexible Graphite SFB/260 SFP/260 PTFE | ≤425 | 水 蒸汽 油品 Water Steam Petroleum Ptoducts | | | WC1 | 38CrMoAl 25Cr2MoV | ≤450 | | | WC6 | ≤540 | | | WC9 | ≤570 | | | C5 C12 | ≤540 | | | ZGCr5Mo | ≤200 | 硝酸类Nitric acid | | | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | | | ≤200 | 醋酸类Acetic acid | <, SPAN lang=EN-US style="FONT-SIZE: 9pt; COLOR: #333333; FONT-FAMILY: ˎ̥; mso-fo, , nt-kerning: 0pt; mso-bidi-font-family: 宋体"> | | ZG1Cr18Ni12Mo2Ti | 1Cr18Ni12Mo2Ti | | | |
