If diaphragm actuator of control valve does work?
Nov 03, 2015
For the diaphragm actuator, Diaphragm is the most important element. If the air supply system is in the normal value but diaphragm actuator does work, the first you should inspect if the diaphragm is broken or not in the right position. When the metal surface of the diaphragm casing has sharp corners, burrs and other defects, it will damage the diaphragm, but the diaphragm should not have any leakage. Additionally if the diaphragm used for too long, it also will affect the use of the material aging.