The principles, characteristics, classification, installation, maintenance and installation solution

With a longer service life and maintenance-free period, it will depend on the following factors: normal working conditions, maintaining a harmonious temperature/pressure ratio, and reasonable corrosion data.

Be careful:

When the ball valve is closed, there is still pressure fluid inside the valve body.

Remove pipeline pressure and keep valve in open position before maintenance

Before maintenance, disconnect the power or gas source

Separate the actuator from the bracket before maintenance

Before disassembly and decomposition operation, it is necessary to ascertain that the upstream and downstream pipes of the ball valve have indeed been depressed.

During decomposition and reassembly, care must be taken to prevent damage to the sealing surface of parts, especially non-metallic parts. Special tools should be used when removing O-rings.

Bolts on flanges must be tightened symmetrically, step by step and evenly during assembly

Cleaning agent should be compatible with rubber parts, plastic parts, metal parts and working media (such as gas) in ball valves. When the working medium is gas, the metal parts can be cleaned with gasoline (GB484-89). Cleaning of non-metallic parts with pure water or alcohol

Separated parts can be washed by immersion. Metallic parts that remain undissolved can be scrubbed with clean, fine silk cloth impregnated with detergent (to avoid fibers falling off and adhering to the parts). Cleaning must remove all the grease, dirt, glue, dust adhering to the wall, etc.

When assembling, no metal debris, fibre, grease (except for prescribed use) dust and other impurities, foreign bodies, etc. should be allowed to contaminate, adhere to or stay on the surface of parts or enter the inner cavity.