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Introduction to the classification of the valve
Source: | Author:zhongdeen | Publish time: 2015-08-21 | 1402 Views | Share:
This classification only by theory, the role of the structure divided by, is the world, the most commonly used classification methods. General points valve, globe valve, throttle, instrument valves, piston valves, diaphragm valves, plug valves, ball valves, butterfly valves, check valves, pressure reducing valve, steam trap, control valve, foot valve, filter, blowdown valve.

By purpose and role of classification

Regulating valves - primarily for regulating the flow of media, pressure and the like. Including control valve, throttle, valve and so on.

Check valve class - used to prevent the media back. It includes a check of the various structures.

Shunt Valves - for separation, distribution or mixed media. Including the distribution of various structures valves and steam traps.

Safety valve class - for media overpressure safety protection when. They include various types of safety valve.

The cut valve - is mainly used for cut off or connected media stream. Including gate, globe valves, diaphragm valves, ball valves, plug valves, butterfly valves, piston valve, plug valve ball, needle valves and other instruments.

Classification by Pressure

Vacuum valve - the working pressure is lower than standard atmospheric pressure valve.

Low pressure valve - Nominal pressure PN less than 1.6MPa valve.

The pressure valve - Nominal pressure PN 2.5-6.4MPa valve.

Pressure valve - Nominal pressure PN10.0-80.0MPa valve.

Ultrahigh-pressure valve - Nominal pressure PN greater than 100MPa valve.

By medium temperature classification

High temperature valve --t of more than 450 ℃ valve. .

Temperature valve valve is less than t less than 450 ℃ -120 ℃.

--40 ℃ ambient temperature valve valve less than t less than 120 ℃ of.

Low temperature valve valve is less than t less than -40 ℃ --100 ℃.

Ultra-low temperature valve --t of less than -100 ℃ valve.

Press body material classification

Metal body lined valves -: lead-lined valve, plastic lined valves, lined valves enamel.

Non-metallic materials valve - such as: ceramic valves, glass steel valves, plastic valves

Valve metal material - such as: copper alloy valves, valve aluminum, lead alloy valves, titanium valves, Monel valves, cast iron valves, carbon steel valves, cast steel valves, low alloy steel valves, high alloy steel valves.