Description of hydraulic control valves

Description of hydraulic control valves, hydraulic control valve is a kind of using water from the lip type valve body, do not need to add oil lubrication, in case of the inside of the main valve parts, please follow the instructions below to remove. ( Note: in general consumption damage product for the diaphragm valve body and ring, other internal components damage little) 1. Main valve before and after the end of the first gate door closed. 2. The piping on the main valve cover joint screw loosening, internal pressure release valve. 3. All the screws removed, including controlling necessary pipeline brass nut. 4. The valve cover and spring. 5. To get off axis core, diaphragm, piston, do not damage the diaphragm. 6. Remove the above things, diaphragm and examine whether the protection ring damage; If no damage do not again points to its internal parts. 7. If found that the diaphragm or ring was damaged, please loose the nut on the axis core, get to decompose the diaphragm or circle, comes out to replace the new diaphragm or ring. 8. To examine in detail the main valve inside there is no damage to the valve seat, shaft core, etc, if you have any other debris inside the main valve to clear it. 9. Is in reverse order will replace the parts after combination installed main valve, no jam phenomenon should be the valve gate. 10. Please refer to installation considerations to use operation.