Solenoid valve maintenance methods
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A few days ago, the company shut down the first phase due to slow solenoid valve operation. I would like to know how to maintain solenoid valves in general and how often.
Solenoid valve maintenance 1. When the solenoid valve is not used for a long time, the manual valve in front of the valve should be closed. When re-activating, the solenoid valve should be drained cleanly and tested several times. It should be put into use after the switch is normal. 2. Dirt inside and outside the large valve and the suction surface of the armature should be cleaned regularly. Be careful not to damage the sealing surface. 3. After the solenoid valve is installed, the medium must be introduced to test the operation several times, and it can be put into formal use only after it is confirmed to be normal. 4. When working, pay attention to the pressure gauges before and after the valve. The working pressure must not exceed the rated pressure, and the working pressure difference must be within the rated pressure difference range. When the working pressure exceeds the rated pressure or the working pressure difference exceeds the rated pressure difference, the solenoid valve must be stopped and the front and rear manual valves must be closed to prevent explosion and leakage of the solenoid valve. 5. When used for a long time, if the seal between the piston and the valve seat is not good, the piston sealing surface can be ground again and then ground with the valve seat. 6. Solenoid valves are generally installed horizontally. If installed on the side, it may cause the valve to not close tightly, that is, internal leakage, so try to avoid side installation. 7. For pilot-operated solenoid valves, check whether the pressure difference in the pipeline is too small. If the pressure difference is too small, the solenoid valve will not work properly. In this case, a direct-acting solenoid valve needs to be selected. If the pressure difference is too large, far exceeding the design value of the solenoid valve, and it cannot work normally, a high-pressure solenoid valve should be used.
Generally, chemical plants are inspected once a year. If the solenoid valve needs to be cleaned, should it be cleaned during the inspection period?
Generally, when disassembling and inspecting insensitive parts during major overhaul, pay attention to the sealing surface.
Generally, when disassembling and inspecting insensitive parts during major overhaul, pay attention to the sealing surface.
Annual overhaul, or regular (when conditions permit) disassembly and inspection. is the most practical method
It’s best to replace worthless things regularly.
Well, yes, you have to look at where the solenoid valve is used. Just use kerosene when cleaning it.
Solenoid valve does not require maintenance: 1. The air source meets the standard. 2. The solenoid valve is of reliable quality. 3. The hygiene of the solenoid valve cannot be too bad. It is not necessary to control it after basic installation. It is maintenance-free.