Ball valve maintenance
1. With regard to the disassembly, it is necessary to check the clear ball valve. After the downstream pipe determines that the pressure has been removed, the disassembly and disassembly operation can be carried out; when the disassembly is carried out again, it is important to be careful to prevent the sealing surface of the damaged part, especially the non-metal part. To operate with special tools, the bolts of the flange shall be symmetrically and evenly tightened.
2. For cleaning, the cleaning agent shall be compatible with the rubber parts, plastic parts, metal parts and working medium in the ball valve. for example, when the working medium is a gas, metal parts can be cleaned with gasoline, and after the cleaning agent is volatilized, or after the cleaning agent is wiped off, the cleaning agent can be assembled, Dust or other foreign matters such as grease are adhered to the surface of the part or into the inner cavity. Also, if there is leakage at the packing, the valve stem nut needs to be locked again.
3. the use of grease, grease should also be compatible with ball valve metal materials, rubber parts, plastic parts and other working media. When the working medium is gas, special 221 grease can be used. On the surface of the sealing slot, on the rubber seal, and on the sealing surface of the valve stem, each coated with a thin grease.