Adjust the pneumatic valve failure of equipment accessories

regulating pneumatic valve accessories fault in flange leakage of medium, pneumatic valve rod bent or broken, corrosion, damage of pneumatic trims. At this point, need to check the actuator, accessories and packing, check the overall collapse asbestos gaskets and the pneumatic valve, check the pneumatic valve, pneumatic valve internal parts, so as to find the abnormal failure caused by medium leakage.
in the inspection, such as found that packing is dry, asbestos gaskets have corrosion phenomenon, need to replace asbestos gaskets, and strengthen the stuffing box cover nut. Will collapse of pneumatic valve rod, such as found that dot pit corrosion of pneumatic valve stem in the groove, need to grind the pneumatic valve stem, make its surface is bright and clean after pneumatic stem back into the body, try to crack down on leakage, such as processing not approved without any leakage. （ According to tests, pneumatic valve)