Correct selection of adjustment the size and type of the pneumatic valve

in general, the throttling and adjusting control and mud medium, shorter demand structure, opening and closing speed ( / roll. Low voltage cutoff ( Pneumatic valve pressure difference is small, recommended to choose a butterfly.
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. Throttling under special working conditions, or seal strict or severe worn, low temperature, Cryogenic use pneumatic valve adjustment, such as operating conditions require special design to triple eccentric metal sealing with conditioning or double eccentric butterfly pneumatic valve.
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 ~ degrees of fresh water, sewage, sea water, salt water, steam, gas, food, pharmaceutical, oil and all kinds of acid and alkali, and other lines.
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.
metal to metal wire sealing 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.
metal on metal surface seal pneumatic valve in addition to the triple eccentric butterfly 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.