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

pneumatic valve maintenance should focus on the following five parts test. (1) the body wall. Check the pressure, corrosion resistance. (2) the seat. Left is susceptible to corrosion by the screw loose, check the seat inside surface of the media should pay attention to the fixed seat. In the case of high pressure, should check whether the pneumatic seat sealing surface for cleansing. (3) pneumatic valve core. Carefully check whether the pneumatic valve core parts of corrosion, wear and tear, especially under the condition of high pressure difference of the pneumatic valve, wear serious, should be taken into consideration seriously. Dry also should check whether there is a similar phenomenon, loose or connected to the pneumatic valve core, etc. (4) diaphragm, O ring seal, etc. Check whether the aging and cracking damage. (5) seal packing. Check the ptfe packing, sealing grease aging, dry, ostensibly to damage.