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Jining Tongderui Construction Machinery Co., Ltd.


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Hydraulic Valve

Product categories of Hydraulic Valve, we are specialized manufacturers from China, Hydraulic Valve, Hydraulic Control Valve suppliers/factory, wholesale high-quality products of Hydraulic Solenoid Valve R & D and manufacturing, we have the perfect after-sales service and technical support. Look forward to your cooperation!

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Hydraulic Valve Contain Main Control Valve, Pilot Valve on Pump, Relief Valve on Control Valve and Solenoid Valve.


(1) when the single boom is lifted, the two pumps supply oil together to improve the lifting speed of the boom. (only when the boom is raised)

(2) when the bucket rod moves separately, the two pumps supply oil to the platform and speed up the action speed of the bucket.

(3) the boom is preferred. When the boom and other actions are carried out at the same time, the action of the boom will be given priority.

(4) priority is given to rotation, and when rotary and bucket move simultaneously, gyration will be given priority.

(5) Negative flow control, to provide a negative flow signal to the main pump, so that the valve stem in the middle, the main pump displacement becomes minimum.

(6) Walking in a straight line, when the excavator is moving forward or backward, other actions can be taken at the same time to ensure the needs of special working conditions.

(7) electrical sensors can be configured to meet the needs of electronic control.

Hydraulic Valve

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Sally Yu

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