The selection of pneumatic control valve in chemical process

     Adjust the selector valve type and structure
     Depending on its stroke, pneumatic control valve can be divided into two different types, namely, the angle straight trip itinerary, according to the structure points, pneumatic control Range Top Burner Valve can be divided into the butterfly, angle valves, sleeve valves, ball valves, diaphragm valves, Globe valves and other types.
     Which, through single-seat control valve is the process of using the minimum amount of valve leakage, flow performance ideal, simple structure, can be used to leak demanding area, but its passage is relatively complex, which to some extent limit the scope of its use.
     Through safety gas aluminum valves is through single-seat control valve opposite a valve, there is no strict requirements for leakage, suitable for use in large-area working pressure at present, through engine regulation is our most extensive range of applications a control valve.
     Sleeve valve can be divided into two types, namely double sealed sleeve valve with single seal sleeve valve, the Gas Top Burner Valve sleeve has a good stability, low noise, easy accessibility, but its price is relatively high, and higher maintenance requirements Therefore, using the range are also some limitations.
     Diaphragm flow path is simple, its production and use is also high corrosion resistance PT-FE and PFA, it is suitable for application in alkali or acid environment, but relatively poor regulation.