Adjustment of the pneumatic valve applicable occasions is one of the important knowledge to butterfly selection of pneumatic valve

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, must also consider closing butterfly plate consistence of pipeline medium under pressure. In addition, you must consider elastic pneumatic 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, pneumatic valve make adjustment to work properly and efficiently. Usually,
in throttling 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.
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) 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. 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 to metal surface seal triple eccentric butterfly 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, pneumatic valve, the cut-off pneumatic brake valve when good alternatives.