The category of the pneumatic valve figure number

. Hydrophobic pneumatic valve
hydrophobic pneumatic valve, also known as hydrophobic, its function lies in resistance gas drainage, belong to automatic pneumatic valves. The types of
it float barrel type, constant temperature type, thermodynamic and pulse, etc.
　　. Brake pneumatic valve pneumatic valve is also called
gate valve or gate pneumatic valve, it is to use the gate lifting control pneumatic valves open and close, fluid by a pneumatic valve flow remains the same, so the small resistance.
compared brake pneumatic valve and globe valve, pneumatic valve in the open and closed gate when saving, small flow resistance, pneumatic valve body is shorter, when brake pneumatic valve fully open, the pneumatic valve plate is not affected by flow medium erosion wear.
choose features: good seal performance, fluid resistance small, open and close force is small, also have certain flow adjusting performance, and can see from the pneumatic lifting height of the stem of the pneumatic valve opening size, mainly used in some large diameter pipeline.
　　. Check pneumatic valve
check list of pneumatic valve and flow pneumatic valve or non-return valve, it is a kind of according to the pressure difference between before and after pneumatic disc and automatic opening and closing of the pneumatic valve.
it has strict direction, only the medium flow in one direction, and prevent the reverse flow.
choose features: generally applicable clean medium, for larger with solid particles and the viscous medium shall not apply.
　　. By the pneumatic valve
as pneumatic valve is mainly used for hot water supply and high pressure steam pipeline, it has simple structure, high rigor, convenient manufacture and maintenance, resistance is larger.
fluid through the pneumatic valve to change flow direction of turning, so the flow resistance is bigger, so when installation should pay attention to the fluid 'low into higher', the direction cannot be installed backwards.
choose characteristics: structure than the brake pneumatic valve is simple, manufacture, maintenance is convenient, also can adjust flow rate, wide application.
　　. Pneumatic valve
cock cock pneumatic valve is also called kock or revolving door. It mainly consists of pneumatic valve and plug.
choose features: simple structure, small dimension, opening and closing fast, convenient operation, small fluid resistance, easy to manufacture three-way or four-way pneumatic valves, to make a distribution of commutation.
　　. Pneumatic valve throttle
throttling the structure characteristic of pneumatic valve is no single pneumatic valve plate, but the use of pneumatic valve rod end grinding instead of pneumatic valve plate.
choose features: the appearance of pneumatic valve small measurement, light weight, the pneumatic valve is mainly used for instrument and throttling adjustment.
　　. Safety
pneumatic valve pneumatic valve is a safety device, when the medium inside the pipeline system or equipment pressure in excess of the prescribed value, automatically open the pneumatic valve exhaust step-down, to avoid explosion danger.
　　. Reduced pressure pneumatic valve
the reduced pressure pneumatic valve, pneumatic valve is also called surge tank is used to reduce the medium in the pipeline pressure. Decompression of the commonly used pneumatic valve piston, corrugated pipe and film, etc.
choose features: reduced pressure pneumatic valve is only applicable to steam, clean medium such as air and clean water.
　　. Pneumatic valve
butterfly pneumatic butterfly valve not only in the oil, gas, chemical industry, water treatment and other general industrial used widely, but also applied to the cooling water system of thermal power plants.
control pneumatic valve has simple structure, small volume, light weight, only by a few parts.
the commonly used control pneumatic valve has the wafer butterfly valve and flanged butterfly pneumatic valve two kinds.
butterfly pneumatic valve suitable for installation on the large diameter pipe.