止回阀的施工、安装

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原文：
1、安装位置、高度、进出口方向必须符合设计要求，注意介质流动的方向应与阀体所标箭头方向一致，连接应牢固紧密 2、阀门安装前必须进行外观检查，阀门的铭牌应符合现行国家标准《通用阀门标志》GB 12220的规定。对于工作压力大于1.0 MPa及在主干管上起到切断作用的阀门，安装前应进行强度和严密性能试验，合格后方准使用。强度试验时，试验压力为公称压力的1.5倍，持续时间不少于 5min，阀门壳体、填料应无渗漏为合格。严密性试验时，试验压力为公称压力的1.1倍；试验持续的时间符合GB 50243的要求。 3、在管线中不要使止回阀承受重量，大型的止回阀应独立支撑，使之不受管系产生的压力的影响。三、止回阀的安装注意事顶： 1、在管线中不要使止回阀承受重量，大型的止回阀应独立支撑，使之不受管系产生的压力的影响。 2、安装时注意介质流动的方向应与阀体所票箭头方向一致。 3、升降式垂直瓣止回阀应安装在垂直管道上。 4、升降式水平瓣止回阀应安装在水平管道上。

“ Check valve construction, installation”是由中国止回阀网提供的阀门新闻，译文仅供参考。另外，中国止回阀网还提供相关产品搜索：旋启式止回阀、升降式止回阀、对夹式止回阀、消声止回阀、微阻缓闭止回阀等。

译文：
Check valve construction, installation 1, the installation location, altitude, direction of imports and exports must meet the design requirements, note the direction of media flow valve should be marked by the arrow direction, the connection should be firmly close 2, the valve must be installed before the visual inspection of the valve plate should be consistent with current national standards, "Universal Valve logo" GB 12220's requirements. For working pressure greater than 1.0 MPa and cut off the main pipe played the role of the valve, the installation should be carried out before the strength and rigorous performance tests, passing behind the prospective use. Strength test, the test pressure is 1.5 times the nominal pressure, duration of not less than 5min, the valve housing, packing should be no leakage as qualified. Tightness test, the test pressure for the nominal pressure of 1.1 times; test duration in line with the requirements of GB 50243. 3, the check valve in the pipeline do not bear the weight of a large non-return valve should be independent of support, so that the pressure generated from piping impact. Third, the top check valve installation precautions: 1, the check valve in the pipeline do not bear the weight of a large non-return valve should be independent of support, so that the pressure generated from piping impact. 2, the installation should pay attention to the direction of media flow and the body of the votes in the arrow direction. 3, the vertical lift flap valve should be installed in a vertical pipe. 4, the level of valve lift check valve should be installed in horizontal pipelines.

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原文来源：http://www.1zhihuifa.com/

2011-12-22 08:09