The application and structure of wafer check valve

The way check valve of the wafer check valve is installed in the pipeline system, and its main function is to prevent the backflow of medium The check valve is an automatic valve that opens and closes depending on the medium pressure The wafer check valve is suitable for various pipelines with nominal pressure of PN1.0MPa ~ 42.0mpa, class150 ~ 25000, nominal diameter of DN15 ~ 1200mm, nps1 / 2 ~ 48, and working temperature of - 196 ~ 540 ℃, to prevent medium backflow By selecting different materials, it can be used in water, steam, oil, nitric acid, acetic acid, strong oxidizing medium, uric acid and other media The main materials of wafer check valve: carbon steel, low temperature steel, dual phase steel (F51 / F55), titanium alloy, aluminum bronze, Inconel, SS304, ss304l, SS316, SS316L, chrome molybdenum steel, Monel (400 / 500), 20 alloy, Hastelloy and other metal materials Standards and specifications for wafer check valve 1 Design and manufacture: api594, API6D, JB / t8937 2 Structure length: api594, API6D, din3202, JB / t8937 3 Pressure and temperature rating: ANSI B16.34, din2401, GB / t9124, hg20604, hg20625, sh3406, JB / T74 4 Test and inspection: API598, JB / t9092 5 Piping flange: JB / T74 ~ 90, GB / t9112-9124, hg20592 ~ 20635, sh3406, ANSI B 16.5, din2543-2548, GB / t13402, api605, asmeb16.47 wafer check valve structure features 1 Short structure length, only 1 / 4 ~ 1 / 82 of the traditional structure length, small volume, light weight, only 1 / 4 ~ 1 / 20 of the traditional flange check valve weight, fast valve disc closing, small water hammer pressure 4 Both horizontal and vertical pipes can be used It is easy to install 5 The flow channel is unobstructed 6 The flow resistance is small 6 The action is sensitive The sealing performance is good 7 The travel of valve disc is short The closing impact force is small 8 The overall structure is simple and compact The shape is beautiful 9 The service life is long The performance is reliable Flange check valve