Adjust the pneumatic valve maintenance should focus on the check the following five parts

in regulating pneumatic valve maintenance should check the following five parts mainly. 1) pneumatic valve body wall. Check the pressure, corrosion conditions. (2) pneumatic valve seat. Because medium infiltration, fixed pneumatic seat with the thread surface are susceptible to corrosion and make the pneumatic valve seat is loose, should be careful when checking. In high-pressure situations, but also should check whether the pneumatic valve seat sealing surface is bad. (3) pneumatic valve core. Carefully check whether all parts of the pneumatic valve core corrosion, wear and tear, especially under the condition of high pressure differential pneumatic valve core is more serious wear and tear, and should be pay attention to. You also should check whether the pneumatic valve stem is also a similar phenomenon, the phenomenon such as loose or connected to the pneumatic valve core. (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.