The hydraulic control valve is a water pressure control valve, and the hydraulic control valve is composed of a main valve and its attached catheter guide valve needle ball valve and pressure gauge. According to the purpose of the use of different functions and places can be developed into a remote control float valve pressure relief valve slow closing check valve flow control valve pressure relief valve hydraulic electric control valve, multi-function pump control valve.
The hydraulic automatic control valve should be installed before the filter, and should be easy to discharge the requirements.
The water pump control valve is a self-lubricating valve body that uses water and does not need to be lubricated. If the parts in the main valve are damaged, disassemble it according to the following instructions:
1. Close the main valve front and rear gate valves first.
2. Loosen the pipe fitting screw on the main valve cover to release the pressure in the valve.
3. Remove all screws, including nuts for the necessary copper tubes in the control line.
4. Take the valve cover and spring.
5. Remove the shaft, diaphragm, piston, etc., and do not damage the diaphragm.
6. After removing the above items, check if the diaphragm and O-ring are damaged. If there is no damage, please do not compete for internal parts.
7. If it is found that the diaphragm or O-ring is damaged, loosen the nut on the shaft and disassemble the diaphragm or ring by the Zhejiang, and replace it with a new diaphragm or O-ring.
8. Check in detail whether the internal valve seat, shaft core, etc. of the main valve are damaged, if any other debris is cleared inside the main valve.
9. Install the main valve in the reverse order and replace the assembled parts. Note that the valve cannot be stuck.
Note: The inner valve generally consumes damage to the diaphragm and O-ring, and other internal parts are less damaged.
Precision Grinding And Polishing Machine
Ultra-precision cutting Ultra-precision cutting refers to the cutting method whose surface roughness is less than Ra0.04μm. The key problem in ultra-precision machining is that the thin surface layer of 0.1μm is cut in the final step. This requires both an extremely sharp tool with a radius of the blunt circle of the tool at the nanoscale and a tool with enough durability to keep it sharp. At present, only diamond tools can meet the requirements. In ultra-precision cutting, the cutting speed should be very high and the cutting amount should be small to ensure that the residual area on the workpiece surface is small, so as to obtain minimal surface roughness
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