As the characteristics of the pneumatic valve

the pneumatic valve is closed ( Pneumatic disc along the center line of the pneumatic valve seat mobile pneumatic valves. According to the mobile form of pneumatic valve, pneumatic valve seat with pneumatic disc change in his itinerary directly proportional relationship. Because this pneumatic valve open or close the pneumatic valve stem travel relatively short, and very reliable cutting function, and due to the change of pneumatic seat his trip proportional relationship with the pneumatic valve, is very suitable for the traffic regulation. Therefore, this type of pneumatic valves are well suited for use as cut off or adjust and throttling. As the selection of pneumatic valve principle is:, high temperature and high pressure medium or device appropriate chooses as 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. Can choose needle, small pneumatic valve pneumatic valve, pneumatic valve, the sampling instrument pneumatic valve pneumatic valve, pressure gauges, etc. , flow control and 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. , 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. , desilication in bayer process of alumina production workshop, easy to coking on the pipeline, easy to use pneumatic valve 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 menstruation less than on the pipeline of mm. One of the most obvious advantage is: 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 or caliber: nominal diameter DN ~, NPS / ~ 'connection mode: flange, butt welding, thread and other applicable temperature: - Drive mode: ℃ ~ ℃, pneumatic, electric, hydraulic, pneumatic 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.