The selection of automatic pneumatic valves - The selection of pneumatic valve

use pneumatic valves must master the medium performance, flow characteristics, as well as the temperature, pressure, flow, liquid, and with the technology, operation, safety factor, the proper type, the choice of the structure, types of pneumatic valves, then.
automatic pneumatic valve selection and general pneumatic valve, in addition to consider the economic and reasonable choice, durable, but also require automatic pneumatic valve is sensitive, reliable and accurate adjustment and other properties. 。 Choose pneumatic valve one-way pneumatic valve's role is only allowed to medium flows in one direction, the direction and stop the flow. Common check pneumatic valve two elevators and swing ( See figure - The one in figure - ） 。 And small high pressure equipment or piping, usually using aerodynamic lift check valve. The requirements of pipeline pressure drop, should not use the lift check pneumatic valve, its liquidity, more should use pneumatic butterfly valve or check pneumatic valve. In the big and the special requirements of pipeline pressure fluctuations, in order to prevent damage of water hammer pneumatic valve should be used in the buffer device check pneumatic valve. The larger diameter, orange peel select check pneumatic valve. In boiler feed pump outlet, a blank line should use special one-way pneumatic valve, in order to prevent the backflow medium, improve the efficiency of the pump. Hand moving valve pump suction pipe. Regular check pneumatic valve pneumatic valve and lift check the diameter of the pneumatic valve should try to avoid too much. In order to minimize the flow pneumatic valve to open or open to the right place, in some cases, using, installed in the pipe size check pneumatic valve, is smaller than the corresponding diameter. In order to meet the needs of a variety of purposes, there is a check pneumatic valve, such as varieties are: pneumatic ball valve, screw thread check pneumatic valve, work does not swing check pneumatic valve, pneumatic disc, oblique cone diaphragm check the influence of the pneumatic valve, etc. According to the different media, can produce all metal pneumatic valve, and in leather, rubber, or synthetic coverage embedded metal, alloy materials such as hot spraying.