Attention to pneumatic control valve selection

and clear air regulating pneumatic valve in the use of equipment or device, pneumatic regulating pneumatic valve working conditions were determined: suitable medium, working pressure, working temperature and so on.
, determine and pneumatic control pneumatic valve connection nominal pipe size and the connection mode: flange, threaded and welding, etc.
, determine the pneumatic regulating pneumatic valve type: brake pneumatic valve, globe pneumatic valves, pneumatic ball valve, butterfly valve, throttle pneumatic valve, safety valve, pressure pneumatic valve, pneumatic valve, steam trap, etc.
, determine the movement pattern can be divided into: straight stroke and stroke in two ways.
, and the choice of pneumatic regulating pneumatic valve types: closed-circuit pneumatic regulating pneumatic valve, pneumatic control valve, pneumatic safety regulating pneumatic valve, etc.
and pneumatic adjusting the parameters of the pneumatic valve: for the pneumatic valve, pneumatic automatic adjustment according to different needs to allow flow resistance, discharge capacity, back pressure, etc. , to determine the nominal pipe diameter and the diameter of the pneumatic valve seat hole. （ famen。 cn）
and determine the operation way of pneumatic regulating pneumatic valve: manual, electric, magnetic, electrical and pneumatic or hydraulic linkage or electro-hydraulic linkage, etc.
, according to the pipeline medium, working pressure, working temperature to determine the selected pneumatic regulating pneumatic valve and internal parts of the shell material: gray cast iron, malleable cast iron, ductile iron, carbon steel, alloy steel, stainless acid-resistant steel, copper alloy, etc.
and finally determine the matters needing attention.