The hydraulic control valve is a self-lubricating valve body that uses water, and does not need to be lubricated with additional oil. If the parts in the main valve are damaged, please disassemble according to the following instructions. (Note: The general consumable damaged products in the inner valve are the diaphragm and the O-ring, and other internal parts are rarely damaged.) The hydraulic control valve covers the multi-functional water pump control valve, flow control valve, multi-functional hydraulic control valve, etc.

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Repair and maintenance of hydraulic control valve:

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1. First close the front and rear gate valves of the main valve.

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2. Loosen the pipe joint screw on the main valve cover to release the pressure in the valve.

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3. Remove all the screws, including the nuts of the necessary copper pipes in the control line.

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4. Take the valve cover and spring.

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5. Remove the shaft core, diaphragm, piston, etc., do not damage the diaphragm.

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6. After taking out the above items, check whether the diaphragm and ○-ring are damaged; if there is no damage, please do not divide the internal parts by yourself.

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7. If the diaphragm or O-ring is found to be damaged, please loosen the nut on the shaft core, disassemble the diaphragm or the ring one by one, and replace it with a new diaphragm or O-ring after taking it out.

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8. Check in detail whether the valve seat, shaft core, etc. inside the main valve are damaged. If there are other sundries inside the main valve, clean them out.

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9. Assemble the replaced parts and components in the reverse order and install the main valve, paying attention to the fact that the valve cannot be blocked.