This classification method is by principle, the role and by the structure, is the most commonly used classification methods in the current international and domestic. Generally divided gate valve, globe valve, throttle, instrument valves, piston valves, diaphragm valves, plug valves, ball valves, butterfly valves, check valves, pressure reducing valve safety valve, steam traps, control valve, bottom valve, filter, sewage valve.
Classified according to the purpose and role of
The regulating valve class - mainly for regulating media flow, pressure, and other. Including control valve, throttle valve, pressure reducing valve.
Check valve class - used to prevent the media back. Including various structures check valve.
Shunt valve - for the separation, distribution, or mixed media. Including the distribution of various structures such as valves and steam traps.
Safety valve safety class - for medium overpressure protection. Including the various types of safety valves.
Truncated the valve class - mainly used to cut off or connected media flow. Including gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly valve, piston valve, ball valve, needle instrumentation valves, etc..
Classification according to pressure
Vacuum valve - working pressure is lower than standard atmospheric pressure valve.
The low-pressure valve -, PN less than 1.6MPa valve.
Pressure valve - Nominal pressure PN 2.5-6.4MPa valve.
High-pressure valve - valve nominal pressure PN10.0-80.0MPa.
High pressure valve - the valve greater than 100MPa, PN.
Classification by medium temperature
The temperature valve - t greater than 450 ° C valve. .
-120 ℃ temperature valve is less than t less than 450 ° C valve.
Room temperature valve - 40 ° C is less than t the valve less than 120 ℃.
The cryogenic valve - 100 ° C less than t less than -40 ℃ valve.
Ultra-low temperature valve - t is less than -100 ℃ valve.
Body material classification
The metal body lining valve -: lead-lined valves, plastic-lined valves, lined enamel valve.
Non-metallic materials valve - such as: ceramic valves, glass steel valves, plastic valves
Metal material valves - such as: copper alloy valves, aluminum valves, lead alloy valves, titanium valves, monel valves, cast iron valves, carbon steel valves, cast steel valves, low-alloy steel valves, high alloy steel valves.
