原文：
         止回阀施工、安装要点：

 1)、安装位置、高度、进出口方向必须符合设计要求，电磁阀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，调节阀阀门的铭牌应符合现行国家标准《通用阀门标志》GB12220的规定。对于工作减压阀压力大于1.0MPa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。呼吸阀严密性试验时，试验压力为公称压力的1.1倍；试验持续的时间符合GB50243的要求。

 3)、在管线中不要使止回阀承受重量，水力控制阀大型的止回阀(aetvOne-wayvalve)：应独立支撑，使之不受管系产生的压力的影响。

“ Analysis of the construction and installation of valve points ”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： 微阻缓闭止回阀、 蝶型止回阀、 铜止回阀、 更多止回阀产品、 止回阀价格等。

译文：
             Check valve construction, installation points: 1), the installation location, height, mustSafety valves meet the design requirements of the import and export orientation, attention to the direction of media flow valve should be the same as the arrow direction,Reducing Valves the connection should firmly close. 2), the valve must be installed prior to Balance Valvesvisual inspection, the valve plate should be consistent with existing national standards, "Universal Valve logo" GB12220 requirements. The working pressure in the main pipe is greater than 1.0MPa and the role played off the valve, before installing the strength and tight performance test, pass behind the prospective use. Strength test, the test pressure for the nominal pressure API Cast Steel Valvesof 1.5 times the duration of not less than 5min, the valve housing, packing should be no leakage in compliance. Tightness test, the test pressure for the nominal pressure of 1.1 times; Plug Valvestest duration meet the requirements of GB50243. 3) Do not check valve in the pipeline to withstand the weight of a large valve (aetvOne-wayvalve): should be independent of support, so that the pressure piping system from the impact.

原文来源：http://www.1zhihuifa.com/

2010-08-25 07:20

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