Press utility and action classification

Block a powerful person kind basically be used at cutting off or put through medium flows.

Control valve kind basically use at adjusting the discharge of medium, pressure. Include control valve, throttle, pressure-relief valve to wait.

Check valve kind use at preventing medium to flow backwards. Include the check valve of all sorts of structures.

Billabong a powerful person kind use at depart, allocate or mix medium. The allocation that includes all sorts of constructions a powerful person and drain valve.

Relief valve kind use at medium to exceed the safe protection when pressing. Include the relief valve of all sorts of types.

Press main parameter classification

(one) classify by pressure

Vacuum a powerful person actuating pressure the valve under standard atmosphere.

PN of pressure of nominal of low-pressure a powerful person is less than the valve of 1.6MPa.

The valve of PN2.5~6.4MPa of pressure of nominal of middling pressure a powerful person.

The valve of PN10.0~80.0MPa of pressure of nominal of high-pressured a powerful person.

PN of pressure of nominal of extrahigh voltage a powerful person is more than the valve of 100MPa.

(2) classify by medium temperature

T of high temperature a powerful person is more than the valve of 450C.

120C of lukewarm a powerful person is less than T to be less than the valve of 450C in.

Normal temperature a powerful person - the valve that 40C is less than T to be less than 120C.

Microtherm a powerful person - 100C is less than T - the valve of 40C.

T of ultralow temperature a powerful person is less than - the valve of 100C.

(3) classification of material of the body that press a powerful person

Metalloid material valve: Be like valve of valve of pottery and porcelain, glass reinforced plastics, plastic valve.

Metallic stuff valve: Be like valve of alloy of valve of alloy of copper alloy valve, aluminium alloy valve, plumbic alloy valve, titanium, Meng Naier

Valve of cast-iron valve, carbolic steel valve, cast steel valve, low-alloy steel valve, tall alloy steel.

Valve of liner of body of metallic a powerful person: Valve of the lead that be like line, liner is plastic valve, line enamel valve.

Generalized sort law

Method of this kind of classification presses a structure to differentiate again by principle, action already, it is international, home's at present most commonly used classification method. A powerful person of valve of a powerful person of a powerful person of a powerful person of general component brake, shut-off valve, throttle, appearance, force plunger a powerful person, diaphragm valve, faucet, ball valve, butterfly a powerful person, check valve, pressure-relief valve, relief valve, drain valve, control valve, heart, filter, blowdown.
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