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    Classification of valves

    release time:2018-02-06  viewed:937次
     This classification method according to the principle, function and structure, is the most commonly used international and domestic classification method. General sub gate valve, globe valve, throttle valve, instrument valve, plunger valve, diaphragm valves, plug valves, ball valves, butterfly valves, check valve, relief valve, safety valve, drain valve, regulating valve, at the end of the valve, filters, drain valve etc.. Classification by use and function

    Regulating valve type - mainly used to regulate the flow of media, pressure, etc.. Including regulating valve, throttle valve, pressure reducing valve, etc..

    Check valve type - used to prevent the media back. Check valve comprising various structures.

    Shunt valve class for separation, distribution or mixed media. Including the distribution of various structures and traps, etc..

    Safety valve type - Safety Protection for medium overpressure. Including various types of safety valve.

    Cut off valve type - is mainly used to cut off or connected to the media stream. Including gate valve, globe valve, diaphragm valve, ball valve, plug valve, butterfly valve, plunger valve, ball valve, needle type meter valve.

    Classification by pressure

    Vacuum valve - a valve that is less than the standard atmospheric pressure.

    Low pressure valve - nominal pressure PN less than 1.6MPa of the valve.

    Medium pressure valve - the valve nominal pressure PN 2.56.4MPa.

    High pressure valve - the valve nominal pressure pn10.0-80.0mpa.

    Ultra high pressure valve - nominal pressure PN greater than 100MPa of the valve.

    According to the medium temperature classification

    High temperature valve - t greater than 450 degrees Celsius valve..

    The middle temperature valve - 120 degrees Celsius less than t less than 450.

    Ambient temperature valve - 40 C less than t less than 120.

    Low temperature valve - 100 C less than -40 less than t.

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

    According to body material classification

    Metal body lining valves - lead lined valves, plastic lined valves, lined with enamel valves.

    Non metallic materials, such as ceramic valves, glass steel valves, plastic valves

    Metal valves such as copper alloy valves, aluminum alloy valves, lead alloy valves, titanium alloy valve, Monel alloy valves, cast iron valves, carbon steel valves, cast steel valves, low synthetic steel valves, high alloy steel valves.

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