Description : An operator tells you that a control valve in a stuck ? How will you start checking ?
Last Answer : 1. First of all get the control valve is passed from operation. 2. Check the lingual to the diaphragm of the control valve. 3. Disconnect it possible the actuator stem from the control valve stem. ٤. ... operates. If it does not then the control valve has to be removed from the line to w/shop.