Installation and maintenance of electric ball valve and daily maintenance
The electric ball valve has the action of rotating 90 degrees. The cock body is a sphere with a circular through hole or channel passing through its axis. The main characteristics of the electric ball valve are its compact structure, reliable sealing, simple structure, and convenient maintenance. The sealing surface and the spherical surface are often in a closed state, which is not easy to be eroded by the medium, and is easy to operate and maintain. The ball valve in the pipeline is mainly used as an electric ball valve to cut off, distribute and change the flow direction of the medium. It only needs to rotate 90 degrees and a small torque can be closed tightly.
Installation and maintenance of electric ball valve
1. The ball valve can be disassembled and disassembled only when the pressure before and after the ball valve is removed.
2. When reassembling the ball valve body, the bolts must be tightened symmetrically, gradually and evenly.
3. The cleaning agent should 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, gasoline (GB484-89) can be used to clean the metal parts. Clean non-metal parts with pure water or alcohol.
4. The decomposed individual parts can be cleaned by dipping. When cleaning, remove all grease, dirt, glue, dust, etc. adhering to the wall surface.
Daily maintenance of electric ball valve
1. Having a long service life and maintenance-free period will depend on the following factors: normal working conditions, maintaining a harmonious temperature/pressure ratio, and reasonable corrosion data
2. When the ball valve is closed, there is still a pressurized fluid inside the valve body
3. Before maintenance: release the pipeline pressure and keep the valve in the open position; disconnect the power or air source; separate the actuator from the bracket
4. It is necessary to find out that the upstream and downstream pipelines of the ball valve have indeed relieved the pressure before disassembly and decomposition can be carried out.
5. Care must be taken to prevent damage to the sealing surface of parts, especially non-metal parts, when disassembling and reassembling. Special tools should be used when removing O-rings.
6. The bolts on the flange must be tightened symmetrically, gradually and evenly during assembly
7. The cleaning agent should be compatible with rubber parts, plastic parts, metal parts and working medium (such as gas) in the ball valve. When the working medium is gas, gasoline (GB484-89) can be used to clean the metal parts. Clean non-metal parts with pure water or alcohol
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 needs to be assembled after the cleaning agent on the wall surface to be washed evaporates (can be wiped with a silk cloth not soaked in cleaning agent), but it should not be left for a long time, otherwise it will rust and be contaminated by dust.
10. New parts also need to be cleaned before assembly
11. Metal chips, fibers, grease (except those specified for use) should not be allowed to contaminate, adhere to or stay on the surface of the parts or enter the inner cavity with dust, other impurities, foreign bodies, etc., if there is a slight leakage at the filler. , The stem nut must be tightened.
Electric ball valves are suitable for use as on-off and shut-off valves, but recent developments have designed ball valves to throttle and control flow, such as V-shaped ball valves. It is suitable for general working media such as water, solvents, acids and natural gas. It is also suitable for media with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. It is widely used in various industries. The ball valve body can be integral or combined.