Precautions for ball valves

1. Before proceeding with the disassembly operation, it is necessary to confirm that the pressure in the upstream and downstream pipelines of the ball valve has been relieved.

2. Non metallic parts should be immediately removed from the cleaning agent after cleaning and should not be soaked for a long time.

3. During assembly, tighten the bolts on the flange symmetrically, gradually, and evenly.

4. The cleaning agent should be compatible with the rubber parts, plastic parts, metal parts, and working media (such as gas) in the ball valve. When the working medium is gas, gasoline can be used to clean metal parts. Non metallic parts should be cleaned with purified water or alcohol.

5. Each individual ball valve component can be cleaned by immersion washing. Metal parts with remaining non-metallic components can be cleaned with a clean and fine silk cloth soaked in cleaning agent (to avoid fiber detachment and adhesion to the parts). During cleaning, all grease, dirt, adhesive buildup, dust, and other substances adhering to the wall surface must be removed.

6. Be careful to prevent damage to the sealing surfaces of ball valves and reassembly parts, especially non-metallic parts. Special tools should be used when removing O-rings.

7. After cleaning, it is necessary to wait for the wall cleaning agent to evaporate (which can be wiped with a silk cloth that has not been soaked in cleaning agent) before assembly, but it should not be left for a long time, otherwise it will rust and be contaminated by dust.

8. New parts also need to be cleaned thoroughly before assembly.

9. Lubricate with grease. Lubricating grease should be compatible with the metal material, rubber parts, plastic parts, and working medium of the ball valve. When the working medium is gas, special 221 lubricating grease can be used, for example. Apply a thin layer of grease on the surface of the seal installation groove, a thin layer of grease on the rubber seal, and a thin layer of grease on the sealing and friction surfaces of the valve stem.

10. During assembly, metal debris, fibers, grease (excluding those specified for use), dust, and other impurities, foreign objects, etc. should not be allowed to contaminate, adhere, or remain on the surface of the parts or enter the internal cavity.