Butterfly pneumatic valve applicable conditions and materials

there are many kinds of butterfly pneumatic valve, fast cutting, a continuous adjustment. Mainly used for liquid, gas, low pressure or big diameter pipe. Applicable to pressure loss requirement is not high, the need for flow control, on-off require fast; Usually under ℃ temperature, pressure of the following occasions of ( Butterfly general use pneumatic valve pressure will not very high, as do domestic basically few CL) Medium, commonly used in water and air, is not high to medium requirement, granular medium can also be used.
as the pneumatic butterfly valve seal type, is the coming of synthetic rubber, to give it brought about the rapid development, so it is a new type of pneumatic valve closure. Until the 1980 s in China, the pneumatic valve ACTS on low pressure pneumatic butterfly valve, pneumatic valve seat adopts the synthetic rubber, in the ninety s, due to an increase in foreign exchange, and hard seal ( Metal seal) Pneumatic valve butterfly grow rapidly. There are several pneumatic valve factory can steadily metal sealing butterfly pneumatic valve, the production of pneumatic valve should make adjustment field more widely.
pneumatic valve adjustment to transport and control of water medium, water, circulating water, sewage, sea water, air, gas, liquid, gas, dry powder, mud, fruit pulp and brought a mixture of suspended solids.
butterfly pneumatic valve is suitable for flow control. Due to the adjustment of pneumatic valve in the pipeline pressure loss is bigger, about three times the brake pneumatic valve, therefore, when choosing butterfly pneumatic valve piping system is affected by pressure loss should be considered, but should also consider closing butterfly plate consistence of pipeline medium under pressure. In addition, you must consider elastic pneumatic valve seat material at high temperature on the operating temperature limit. Adjusting the structure of the pneumatic valve length and smaller overall height, opening and closing speed, and has good flow control characteristics, adjusting the structure principle of pneumatic valve is most suitable for production of large diameter pneumatic valves. When require butterfly pneumatic valve to control flow, when using one of the most important correct choose the size and type of butterfly pneumatic valve, and making it work properly and effectively.
, usually, in the throttle and adjusting control and mud medium, shorter demand structure, opening and closing speed ( / roll) 。 Low voltage cutoff ( Small pressure difference) Pneumatic valve, recommended to choose a butterfly.
and in two position adjustment, reducing channel, low noise, have spirit cave and gasification phenomenon, a small amount of leakage into the atmosphere, with abrasive medium, can choose butterfly pneumatic valve.
and throttling under special working conditions, or seal strict or severe worn, low temperature, Cryogenic) When using the pneumatic valve adjustment such as operating conditions, need to use special design to triple eccentric metal sealing with conditioning or double eccentric butterfly pneumatic valve.
and center line butterfly pneumatic valve is suitable for the requirements to seal completely, gas leak test is zero, the demand is higher, the working temperature in - service life ℃ ~ ℃ of fresh water, sewage, sea water, salt water, steam, gas, food, pharmaceutical, oil and all kinds of acid and alkali, and other lines.
and soft seal eccentric butterfly pneumatic valves open and close and is suitable for ventilation and dust removal pipe two-way adjustment, widely used in metallurgy, light industry, electric power, petroleum chemical industry system of gas pipeline and channel, etc.
line, metal to metal sealed double eccentric butterfly pneumatic valve is suitable for the city heat supply, gas supply, water supply pipeline gas, oil, acid and alkali, and so on, as regulation and throttling device.
triple eccentric butterfly, metal to metal surface seal pneumatic valve except as large (pressure swing adsorption (psa) PSA） Gas separation device used program control pneumatic valve, also can be widely used in petroleum, petrochemical, chemical, metallurgy, electric power and other fields, is pneumatic valve, the cut-off pneumatic brake valve good alternatives.

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