The daily maintenance of pneumatic valve

Working principle of the pneumatic valve pneumatic valve figure number daqo _ _ the daily maintenance of pneumatic valves, because evil and complete regulator using environment, hard to avoid some problems in use. Therefore, on a regular basis for regulating valve maintenance and maintenance is very important. Pneumatic valve is the main content of the daily maintenance should have the following: ( 1) The body wall. Check the pressure, corrosion conditions. ( 2) The seat. Because medium infiltration, fixed seat with the thread is susceptible to corrosion on the inner surface of the seat is loose, should be careful when checking. In high-pressure situations, still should check whether the valve seat sealing surface was broken to pieces. ( 3) The valve core. Carefully check whether all parts of the valve core is corrosion, wear and tear, especially under the condition of high pressure differential valve core is more serious wear and tear, and should be pay attention to. Also had a similar phenomenon, should check whether the valve stem or connected to the valve core is loose, etc. ( 4) Diaphragm, o-ring and other gasket. Check whether the aging and crack damage. ( 5) Packing. Check whether the ptfe packing, sealing grease is aging, dry, mating surface is damaged.