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The main control valve is the core control device of the excavator's hydraulic system. It is responsible for regulating the pressure, flow rate, and direction of the hydraulic oil, distributing the high-pressure oil delivered by the hydraulic pump to various actuators (such as hydraulic cylinders and motors) as needed, and providing overload protection and other functions.
Directional control: By moving the valve core, the direction of the oil circuit is changed, realizing the start, stop, and reversal of actions such as boom, bucket, and swing.
Pressure regulation: The main relief valve sets the maximum system pressure and relieves pressure to protect hydraulic components in case of overload.
Flow distribution: Distributes oil volume according to operational needs, controlling the speed of actuators.
Safety protection: Integrates overload relief valves, regeneration valves, etc., to prevent abnormal high pressure from damaging the system.
The accuracy of the main control valve directly affects the excavator's operating performance and the lifespan of the hydraulic system. Its structure varies depending on the model, but the functional principle is the same.
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brand |
OEM |
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Warranty period |
No after-sales service |
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Mechanical test report |
Unavailable |
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Brand Name |
OEM |
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quality |
High quality |
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country of origin |
Shandong, China |
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Video factory inspection |
Unavailable |
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brand |
OEM |
|
Warranty period |
No after-sales service |
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Part Number |
723-40-71310 723-40-71810 |
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app |
Bulldozer SD23 |
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Part Name |
main control valve |
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Keywords |
723-40-71310 723-40-71810 |
