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高能阀门集团有限公司
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产品结构特点Constructionfeatures内螺纹与承插焊截止阀的闭合原理是,依靠阀杠压力,使阀瓣密封面与阀座密封面紧密贴合,阻止介质流通
产品结构特点 Construction features 内螺纹与承插焊截止阀的闭合原理是,依靠阀杠压力,使阀瓣密封面与阀座密封面紧密贴合,阻止介质流通。截止阀只许介质单向流动,安装时有 方向性。截止阀的结构 长度大于闸阀,同时流体阻力大,长期运行时,密封可靠性不强。 The closed principle of the internal screw and socket welding stop valve is to rely on the stem pressure to close the sealing cover of the disc and the sealing cover of the seat to prevent the circulation of the medium. The globe valve only allows the medium to flow in one direction, and the installation has directivity. The globe valve has a structure length greater than gate valve, while fluid resistance is large, and the sealing reliability is not strong in the long run. 技术规范 Technical specification 截止阀结构长度和外接尺寸 Main connection dimensions
设计依据 Design reference GB系列 GB series 设计标准 Design standard GB/T12235 结构长度 Face to face GB/T12221 连接法兰 End flange GB/T12224 试验和检验 Test & inspection GB/T26480
试验压力 Test prssure压力等级
Pressure grade试验压力 Test pressure 公称压力 PN
Nominal pressure壳体试验
Sheil test正密封试验
Sealing test反密封试验
Sealing test气密封试验
Air seal test1.6 2.4 1.76 1.76 0.6 2.5 3.75 2.75 2.75 0.6 4.0 6.0 4.4 4.4 0.6 6.3 9.45 6.93 6.93 0.6 10.0 15.0 11.0 11.0 0.6 16.0 24.0 17.6 17.6 0.6 26.0 39.0 28.5 28.5 0.6 PN:1.6~6.4 PN:10.0~26.0 公称通径
DNL
(mm)H
(mm)D0
(mm)L
(mm)H
(mm)D0
(mm)15 79 175 100 111 195 100 20 92 175 100 130 195 125 25 111 210 125 152 220 160 32 120 240 160 172 245 160 40 152 270 160 140 280 180 50 172 300 180 235 305 200
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