By the pneumatic valve selection principle and its advantages

the selection principle is:
, high temperature and high pressure medium or device appropriate chooses the pneumatic valve. Such as power plants, nuclear power stations, petrochemical system of high temperature and high pressure piping.
is relaxed, convection on the pipeline resistance of pipeline. Thinking about small place of pressure loss.
and small pneumatic valve needle optional pneumatic valve, pneumatic valve, the sampling instrument pneumatic valve pneumatic valve, pressure gauges, etc.
, there is flow control or pressure adjustment, but the adjustment accuracy is not high, and the pipe diameter is small, such as nominal menstruation mm or less on the pipeline, appropriate chooses.
and synthetic fertilizer and chemical fertilizer in the industrial production appropriate chooses nominal pressure PN MPa or PN nominal pressure, nominal pressure of MPa pressure Angle as air throttle valve or high pressure Angle type pneumatic valve.
and desilication in bayer process of alumina production workshop, easy to coking on the pipeline, easy to use pneumatic valve body separated type, pneumatic valve seat place, carbide seal once-through stop pneumatic valve or once-through throttling valve.
the water supply, heating, urban construction engineering, nominal menstruation smaller pipe, can be used as pneumatic valve, balanced or plunger pneumatic valve, such as nominal drift diameter less than on the pipeline of mm.
the pneumatic valve is the most obvious advantage:
in the process of opening and closing, the pneumatic valve in the pneumatic valve sealing surface friction than the brake in the pneumatic valve is small, and wear resistance. Opening channels are generally only for pneumatic seat diameter /, so much smaller than the pneumatic valve gate. Usually on the pneumatic valve body and disc only a sealing surface, thus making craft is good, easy to maintenance.
nominal pressure or stress, PN. - 。 MPa, ANSI类- 、JIS- K
nominal diameter or size: DN ~, NPS / ~ '
connection mode: flange, butt welding, thread and other applicable temperature: - ℃ ℃ ~
drive mode: manual, bevel gear drive, pneumatic, electric, hydraulic, pneumatic hydraulic linkage, electro-hydraulic linkage
pneumatic valve body material: WCB, ZGCrNiTi, ZGCrNiMoTi, CF ( 、CF( L、CFM( 、CFM( L、Ti。 Choose different material, can be respectively suitable for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea, and other media.