Description
The SUS304 SUS316 Sanitary Motor Drive Ball Valve is a sphere with a circular channel, which rotates around the axis perpendicular to the channel. The sphere rotates with the valve stem to achieve the purpose of opening and closing the channel. Ball valves can be tightly closed with only a 90 degree rotation and a small turning torque.
According to the working conditions, different driving devices can be assembled to form various ball valves with different control methods, such as electric ball valves, pneumatic ball valves, hydraulic ball valves, and so on When the ball valve rotates 90 degrees, both the inlet and outlet should be spherical, thus closing the valve and cutting off the flow of the medium. The opening and closing part (ball) is a valve driven by the valve stem and rotates around the axis of the ball valve. This type of valve should generally be installed horizontally in pipelines. Ball valves are divided into pneumatic ball valves, electric ball valves, and manual ball valves according to their driving methods.
Installation and maintenance of electric ball valves
1. When the electric ball valve is closed, there is still pressurized fluid inside the valve body;
2. Before maintenance, release the pipeline pressure and keep the valve in the open position; disconnect the power or air source; disengage the actuator from the bracket;
3. It is necessary to confirm that the pressure in the upstream and downstream pipelines of the electric ball valve has been relieved before disassembly and disassembly can be carried out;
4. When disassembling and reassembling, care must be taken to prevent damage to the sealing surfaces of parts, especially non-metallic parts. Special tools should be used when removing the O-ring;
5. During assembly, the bolts on the flange must be tightened symmetrically, gradually and evenly;
6. 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 (GB484-89) can be used to clean metal parts. Clean non-metal parts with pure water or alcohol;
7. The decomposed individual parts can be cleaned by dipping. Metal parts that still have undecomposed non-metallic parts can be scrubbed with a clean, fine silk cloth soaked in cleaning agent (to prevent fibers from falling off and adhering to the parts). During cleaning, all grease, dirt, glue, dust, etc. adhering to the wall surface must be removed;
8. Non-metal parts should be taken out of the cleaning agent immediately after cleaning and should not be soaked for a long time;
9. After cleaning, it is necessary to wait for the cleaning agent on the wall to be washed to evaporate (it can be wiped with a silk cloth not soaked in cleaning agent) before assembly, but it must not be left aside for a long time, otherwise it will rust and be contaminated by dust;
10. New parts also need to be cleaned before assembly;
11. Use grease for lubrication. Grease should be compatible with ball valve metal materials, rubber parts, plastic parts and working media. When the working medium is gas, special 221 grease can be used. Apply a thin layer of grease on the surface of the seal installation groove, apply a thin layer of grease on the rubber seal, and apply a thin layer of grease on the sealing surface and friction surface of the valve stem;
12. During assembly, metal chips, fibers, grease (except those specified for use), dust and other impurities, foreign matter, etc. should not be allowed to contaminate, adhere to, or stay on the surface of the part or enter the inner cavity.
