Having a long service life and maintenance-free period will depend on the following factors: normal operating conditions, maintaining a harmonious temperature/pressure ratio, and reasonable corrosion data
When the ball valve is closed, pressurized fluid still exists inside the valve body
Before maintenance: Release the line pressure and the valve in open position; Disconnect the power supply or air source; Disengage the actuator from the stand
Must first find out the ball valve, the downstream pipeline has been removed pressure, before disassembly decomposition operation
Disassembly and reassembly must be careful to prevent damage to the sealing surface of the parts, especially non-metallic parts, remove O-ring timely use of special tools
The bolts on the flange must be tightened symmetrically, gradually and evenly during assembly. The cleaning agent shall be compatible with the rubber parts, plastic parts, metal parts and working medium (such as gas) in the ball valve. When the working medium is gas, the metal parts can be cleaned with petrol (gb484-89).
Non-metallic parts cleaned with purified water or alcohol Non-metallic parts should be removed from the cleaning agent immediately after cleaning, not soak for a long time