Commonly used water pump valve selection

the commonly used water pump valve, pump valve selection

common water pump valves are classified according to the purpose and the function block valve is mainly used for cutting or connect medium flow. Include gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly valves, plunger valves, plug valves

valve selection classified according to the purpose and the function block valves are mainly used for truncated or through media stream. Include gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly valves, plunger valve, ball valve, needle type instrument valve, etc. Control valve is mainly used for regulating the flow of medium, pressure, etc. Including pneumatic, electric control valve, throttle valve, relief valve, etc. The check valve classes are used to prevent backflow medium. Including all kinds of structure of check valve. Diverter valve classes are used to separate, distribution, or mixed media. Including all kinds of structure of distributing valve and steam trap. When the relief valve class in the overpressure of medium security protection. Including various types of safety valve, such as the anti-pollution isolating valve, emergency shut down valve.

according to the classification of main parameters ( A) According to the classification of pressure vacuum valve working pressure is lower than the standard atmospheric pressure of the valve. Low pressure valve nominal pressure PN is less than 1. 6 mpa. Medium pressure valve nominal pressure PN 2. 5 ~ 6. 4 mpa. High pressure valve nominal pressure PN10. 0 ~ 80. 0 mpa. Ultrahigh pressure valve valve of nominal pressure PN is greater than 100 mpa. （ 2) According to the classification of high temperature medium temperature valve t greater than 450 c of the valve. Medium temperature valve is less than t less than 120 C 450 C of the valve. The normal temperature valve - C is less than 40 t is less than 120 C of the valve. Cryogenic valve - C is less than t less than - 100 The valve of 40 C. T less than - cryogenic valve 100 C of the valve. （ 3) According to the classification of nonmetal materials to the valve body material: such as ceramics, plastics, glass fiber reinforced plastic valve valve valve. Valve metal materials: such as copper alloy, aluminum alloy, lead alloy, titanium alloy valve valve valve valve, monel alloy cast iron valves, cast steel, carbon steel valve valve valve, high alloy steel, low alloy steel valve valve. Metal valve body lining: such as lead lining, lining plastic valves, valve lining enamel valve. General classification of this classification method is according to the principle, function and according to the structure division, is the most commonly used at present, the domestic classification method. Break up general dynamic gate valve, cut-off valve, throttle valve, instrument valve, plunger valve, diaphragm valve, plug valve, ball valve, butterfly valve, check valve, relief valve, safety valve, drain valve, regulating valve, bottom valve, filter, drain valve and electronic regulator, etc.

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