Select steps and basis of pneumatic valve is generally as follows

and the choice of the pneumatic valve according to the following steps:

(1) (1) selection program based on the use place, use, particularly in the equipment or the use of equipment, pneumatic valve, pneumatic valve operation conditions were determined: medium, working pressure, temperature, etc.
(2) connected to the pneumatic valve, in order to determine the nominal diameter of the pipeline and connection mode: flange type ( And so on) , thread, welding clamp, clamp, the card sets, etc.
(3) determine the operating pneumatic valves: manual, electric, magnetic, pneumatic or hydraulic, electric or electro-hydraulic linkage linkage, etc.
(4) according to the pipeline medium, working pressure and working temperature to determine the pneumatic valve housing and the choice of materials: gray cast iron, malleable iron, ductile iron, carbon steel, alloy steel, stainless steel, acid steel, copper alloy.
5. Choose the type of pneumatic valves: close the pneumatic valves, regulating pneumatic valve, pneumatic valve, safety or the use of forms: switch, external regulation and safety type. Determine the
6 pneumatic valve types: brake pneumatic valve, pneumatic valve, pneumatic ball valve, butterfly pneumatic valve, pneumatic valve, throttle safety pneumatic valve, pneumatic valve, decompression hydrophobic pneumatic valve and other special pneumatic valve.
7) determine the parameters of the pneumatic valve to determine the pneumatic valve seal, seal, or seal leakage level performance requirements; Automatic pneumatic valve, according to the need to determine the resistance to flow, the discharge capacity, back pressure, etc. , and then determine the diameter of the pipe nominal diameter and pneumatic valve seat hole.
pneumatic valve was used to determine the geometric parameters, structure, form and flange, pneumatic valve opens and the size of the height direction length, closed connection bolt hole size and number, size and shape make the pneumatic valve.
pet-name ruby determine the protective coating requirements of pneumatic valves, packing, transportation requirements; In determining the location and pneumatic valve installation position. Attending of pneumatic valves shall determine with special needs: structure, pneumatic valve height, shape, size, flow resistance, discharge capacity, the flow characteristic, protection grade, explosion-proof performance and the length of the other parameters;