How to repair and maintain the hydraulic control valve of the valve

1. The valve first closes the front and rear gate valves of the main valve of the hydraulic control valve.

2. Loosen the pipe joint screw on the main valve cover of the hydraulic control valve to release the pressure inside the valve.

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

4. Take the valve cover and spring.

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

6. After removing the above items, check whether the diaphragm and the ○-ring are damaged. If there is no damage, please do not contend for the internal parts.

7. If the diaphragm or ○-ring is damaged, loosen the nut on the shaft core, disassemble the diaphragm or the ring, and replace it with a new diaphragm or ○-ring.

8. Check the internal valve seat and shaft core of the main valve for damage in detail. If there are other debris, clean it out inside the main valve of the valve.

9. Install the main valve in the reverse order according to the reverse order. Note that the valve cannot be jammed.