Common classification valve

The use classification of the valve
Shut-off valve - mainly used to cut off or connected media stream. Including gate valves, valves, diaphragm valves, ball valves, plug valves, butterfly valves, piston, ball valves, needle valves meters.
- Primarily for regulating the media flow pressure control valves. Includes a control valve, the throttle valve, pressure reducer.
Check valves - used to prevent the media back. Including the various structures of the non-return valve.
Diverter valve - for the separation, distribution or mixed media. Including various structures metering valve and traps.
Pressure Relief Valves - Media overpressure safety. Include various types of safety valves.
Classification of valve differential pressure
Vacuum valve - the working pressure is lower than standard atmospheric pressure valve.
Low pressure valve - Nominal pressure PN less than 1.6MPa valve.
Pressure relief valve - Pressure rating PN 2.5 6.4MPa valve.
High pressure valves - valve PN of PN10.0 to 80.0MPa.
High-pressure valve - Nominal pressure PN greater than 100MPa valve.
Medium temperature classification
High temperature valve - t is greater than the valve 450'C.
The valve on the temperature of - 120 ° C is less than t is less than 450 "C, the valves.pneumatic fitting
The valve at room temperature is less than t --- 40 ° C to less than 120 ° C, wherein the valve.
The cryogenic valve 100 --- "C is less than t less than -40 C valve.
The cryogenic valve - less than-100'C valve.
Shell material classification
Non-metallic materials valve - such as ceramic valves, glass, steel valves, plastic valves.
Metallic materials - such as pieces of copper alloy, aluminum alloy parts, valves, lead alloy, titanium valves, Monel valves, aluminum, cast iron valves, carbon steel valves, cast steel valves, low alloy steel, high alloy steel valves.
The metal body feed valve - such as lead-lined valves, lined plastic parts, mouth children enamel valve.electric solenoid valve