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Home > News > Valve Of Type

Valve Of Type - 2014-01-03 10:03:07

There are many types of valves , there is no way to classify a uniform standard. Some people by use of the valve types , such as power plant valves, chemical valves, etc. ; some people to their medium of transport , such as air valves, oxygen valves, etc. ; some people by the main material of the valve , such as stainless steel ball valves , cast iron butterfly valves, forged steel valve , etc. ; some people by connecting form of , for example, thread valves, flanged butterfly . Of course, there are other more types of valves broader classification , today Dong'ou valve network of technical experts to put some common , universal valve types collected each classification in this article , I hope you understand there are certain types of valves help.

1, According to General Valve Category

This classification only by theory , the role and structure divided , is currently the world , the most commonly used classification methods. General of gate valve, globe valve, throttle , instrument valves , piston valves, diaphragm valves , plug valves, ball valves, butterfly valves, check valves, pressure reducing valve , steam traps, valves, bottom valves, filters , discharge valve.

2 , The structure of the valve by Category

Plug valves, gate valve , globe valve , ball valve for opening or closing the medium flow pipe.

Check valve ( including bottom valve ) - used to automatically prevent backflow of the medium inside the tubes . Throttle - for regulating the flow of media channels .

Butterfly valve is used to turn on or off the media inside the tubes . Also can be used for adjustment . Safety valve for the boiler, container equipment and piping , when the medium pressure stumble over specified value , the excess can be automatically excluded from the medium pressure to ensure the production of safe operation.

Pipes and valves used to automatically reduce the pressure within the device media . Department of the media through the valve when the gap , resulting in the loss of resistance to pressure , to achieve the purpose of decompression .

Trap is used to automatically exclude the steam condensate piping to prevent vapor loss or leakage.

3, According to the kind of pressure valve

Working under pressure from the vacuum pressure valve of the valve.

Low pressure valve - the valve , PN less than 1.6MPa .

Medium pressure valve - Nominal PN2.5 ~ 6.4MPa valve.

High-pressure valve - the valve PN10.0 ~ 80.0MPa of nominal .

High pressure valve - the valve , PN greater than 100MPa .

4 , By purpose and role of the valve Category

Cut valve - mainly used to cut off or turn on media streaming . Including gate valves, globe valves, diaphragm valves, ball valves , plug valves, butterfly valve , plug valve , ball valve , needle -type meter valve.

Regulating valve - primarily for regulating the flow of media pressure. Including control valve, throttle, valve and so on. Class is used to prevent backflow check valve media . Various structures , including a check valve . -

Shunt valve - for the separation , distribution or mixed media. Various structures including traps dispensing valve and the like. Valve class - safety overpressure protection for the media when . Include various types of valve .

5, According to the type of valve body materials

Non-metallic materials valves - such as ceramic valves , fiberglass valves, plastic valves.

Metal Materials valves - such as copper alloy valves , aluminum valves, stainless steel valves , lead alloy valves , titanium valves.

Keywords:butterfly valve ,knife gate valve,ball valve,globe valve,slurry gate valve

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