The main valve of the hydraulic control valve is a self-lubricating valve body that does not require additional oil lubrication. If the components in the main valve are damaged, please follow the instructions below for disassembly. (Note: The damage to the inner valve is generally diaphragm and o-ring, and other internal parts are rarely damaged)
1. First close the front and rear Gate Valves of the main valve.
2. Loosen the pipe joint screw on the main valve cover to release the pressure inside the valve.
3. Remove all hardware screws, including the nuts that control the necessary copper tubing in the tubing.
4. Take the bonnet and spring.
5. Remove the shaft core, diaphragm, piston, etc., and do not damage the diaphragm.
6. After removing the above items, check the diaphragm and the O-ring for damage; if there is no damage, please do not contend for the internal parts.
7. If the diaphragm or o-ring is damaged, loosen the nut on the shaft core, disassemble the diaphragm or the ring, and replace it with a new diaphragm or o-ring.
8. In detail, check whether the internal valve seat and shaft core of the main valve are damaged. If there are other debris, clean them out inside the main valve.
9. Install the replacement parts in the reverse order in the order of the main valve, pay attention to the valve can not be jammed.
10. Please refer to the "Precautions for Installation of Hydraulic Control Valves" for reuse.
Concerned about surprises
Label: Main valve Shaft core Diaphragm Ring bonnet
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