The use of wafer check valve Check valve installed in the piping system, its main role is to prevent media backflow, check valve is a medium pressure to open and close the automatic valve. The check valve on the folder for the nominal pressure PN1.0MPa ~ 42.0MPa, Class150 ~ 25000; nominal diameter DN15 ~ 1200mm, NPS1 / 2 ~ 48; Operating temperature -196 ~ 540 ℃ on the various pipelines, to prevent Media backwards. Through the selection of different materials, can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing media and uric acid and other media. The main material of the wafer check valve is carbon steel, low temperature steel, duplex steel (F51 / F55), titanium alloy, aluminum bronze, INCONEL, SS304, SS304L, SS316, SS316L, , Monel (400/500), 20 # alloy, Hastelloy and other metal materials. Clamp check valve on the structural features 1, the structure of short length, the length of the structure only traditional flange check valve 1/4 ~ 1/8 2, small size, light weight, the weight of only the traditional flange check valve 1/4 ~ 1/20 3, the valve is closed quickly, the pressure of the water hammer is small 4, the horizontal pipe or the vertical pipe can be used, the installation is convenient 5, the flow passage is unobstructed, the fluid resistance is small 6, the action is sensitive and the sealing performance is good 7, Valve stroke is short, close the impact of small 8, the overall structure is simple and compact, handsome in appearance 9, long life, reliable performance