The advantages and disadvantages of different valve classification and its different applications

    Valve Category: Shut-off valve is mainly used to cut off or connect the media flow. Including gate valve, globe valve, diaphragm valve, ball valve, plug valve, butterfly valve, plunger valve, ball valve, needle valve and so on. Regulating valve is mainly used to regulate the flow of media, pressure and so on. Including the control valve, throttle, pressure reducing valve. Check valves are used to prevent backflow of media. Includes various configurations of check valves. Diverter valves are used to separate, distribute, or mix media. Including a variety of distribution valves and traps and other structures. Safety valves are used for the protection of the medium against overpressure. Including various types of safety valve. According to the main parameters of the classification valve (a) by the pressure classification vacuum valve working pressure is lower than the standard atmospheric pressure valve. Low pressure valve nominal pressure PN less than 1.6MPa valve. Nominal pressure in the valve PN2.5 ~ 6.4MPa valve. High pressure valve nominal pressure PN10.0 ~ 80.0MPa valve. High pressure valve nominal pressure PN greater than 100MPa valve. Valve classification (b) by the temperature of the medium temperature valve t is greater than 450C. Medium temperature valve 120C less than t less than 450C valve. Room temperature valve -40C less than t less than 120C valve. Cryogenic valve -100C less than t less than -40C valve. Cryogenic valve t is less than -100C valve. (C) by the valve body material classification Non-metallic materials valves: such as ceramic valves, glass steel valves, plastic valves. Metal material valves: such as copper alloy valve, aluminum alloy valve, lead alloy valve, titanium alloy valve, Monel alloy valve cast iron valve, carbon steel valve, cast steel valve, low alloy steel valve, high alloy steel valve. Metal body lining valves: such as lead-lined valves, lined plastic valves, lined enamel valves. General taxonomy This taxonomy not only by principle, role and structure by the division, is currently the most common international and domestic classification methods. General sub-gate valve, globe valve, throttle valve, instrument valve, plunger valve, diaphragm valve, plug valve, ball valve, butterfly valve, check valve, pressure reducing valve, safety valve, steam trap, regulating valve, bottom valve, filter , Sewage valve and so on.

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