进口立式止回阀，垂直安装逆止阀性能说明 Function description

立式止回阀（垂直安装逆止阀）由于采用弹簧支撑阀芯，故采用立式安装。正常处于关闭状态，由于管线中进口端介质的压力作用，而克服弹簧阻力使阀门开启。当进口端介质压力低于出口端时，弹簧将阀芯推向阀座而使阀门关闭，阻止介质逆流 RETZ The vertical installation of check valve (vertical check valve) is adopted because the valve core is supported by spring. The valve is normally closed, and the valve is opened by overcoming the spring resistance due to the pressure of the medium at the inlet end of the pipeline. When the medium pressure at the inlet end is lower than that at the outlet end, the spring pushes the valve core to the valve seat to close the valve and prevent the medium from flowing back

进口立式止回阀，垂直安装逆止阀技术参数 Technical parameters of 150LB/PN16/10K Japanese standard check valve

执行标准  Executive standards

设计规范Design Rating∶  API6D、BS1868、ASME B16.34、DIN3356、EN 13709、JIS B2071

结构长度Face to Face∶ASME B16.10、DIN3202， EN 558-1, DIN 3202, ISO 5752、JIS B2002

连接法兰Flanged Ends∶ASME B16.5、DIN2543-2546，EN 12267，EN 1092-1、JIS B2220

试验与检验Inspection & Testing∶API598、EN 12266, ISO 5208，DIN3230、JIS B2003

压力-温度Pressure- temperature：ASME B16.34 

通径:2”~ 12” (DN50~300)

压力等级：150LB/PN16/10K，300LB/PN40/20K

适用温度：-40~425℃

主要零部件材质Main Parts Material