底阀用途及性能

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原文：
底阀用途底阀是一种节约能源的阀,一般安装在水泵水下吸管的底端.限制水泵管内液体返回水源,起着只进不出的功能.阀盖上有很多个进水品和加强筋,起到了不易堵塞,主要应用在抽水的管路上.水道和支承的作用.口径有单瓣,双瓣,多瓣型.有法兰连接和螺纹连接. 底阀由阀估,阀瓣,阀盖,衬套,密封圈等零件组成,详见下图水源的水从阀盖进入阀体.在流体的压力作用下,阀瓣打开水,当示停后出口管内的压力将阀瓣迅速关闭,液体将不会倒回水源,起到了即畅通抽水又节约水能损失的作用. 1、为了防止介质逆流，在设备、装置和管道上都应安装止回阀； 2、止回阀一般适用于清净介质，不宜用于含有固体颗粒和粘度较大的介质； 3、一般在公称通经50mm的水平管道上都应选用立式升降止回阀；升降式性能规范公称压力：PN0.25MPa 公称通径：DN15～DN350 适用介质：水、油、及非腐蚀性介质执行标准：Q/12 NJ3583-2001 试验标准：GB/T13927-1992 。

“Use and performance of the bottom valve”是由中国减压阀网提供的阀门行业新闻，译文仅供参考。另外，中国减压阀网还提供相关产品搜索：氢气减压阀、氮气减压阀、氧气减压阀、空气减压阀、更多减压阀产品等。

译文：
Use and performance of the bottom valve Use the bottom valve Bottom valve is a valve to save energy, water suction pump is usually installed in the bottom. Limit the liquid return pipe water pump, plays not only into the function valve cover water supplies and have a number of ribs, played a clogging, mainly used in pumping pipeline. watercourses and supporting role. bore a single lobe, double lobe, Orange Peel type there flanged and threaded connections. Estimated from the valve end of the valve, valve, valve cover, bushings, seals and other parts, see chart below water from the valve cover into the body of water in the fluid under pressure, the valve to open water, when the show stops after the exit tube of the pressure will quickly close the valve, the liquid will not be back into the water, played a smooth pumping and that the role of saving water loss. 1, in order to prevent the media counter-current in the device, the device should be installed on the valve and piping; 2, the check valve for clean media generally should not be used to contain solid particles and the viscosity of the medium; 3, generally in the nominal level by 50mm pipe should be selected on the vertical lift check valve; Lift performance specifications Nominal pressure: PN0.25MPa Nominal Diameter: DN15 ~ DN350 Medium: water, oil, and non-corrosive media Executive Standard: Q/12 NJ3583-2001 Test Standard: GB/T13927-1992

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原文来源：http://www.1jianyafa.com/

2012-01-12 05:54