Arm Plate Connection Balance Valve used for wrecker
Balancing valves are a pivotal component in hydraulic systems, especially prominent in construction machinery and other gravity-lowered mechanical forms. These valves integrate a sophisticated hydraulic circuit that adeptly balances the return oil back pressure against the variable load. This balance ensures the load remains steadfastly stopped at a designated position, allowing for precise control over movement during the load's descent. By mitigating excessive descent speeds, these valves prevent potential damage to structural components, hydraulic parts, and pipelines.
Overcenter valves are engineered to meticulously control the cessation and motion of an actuator. Single overcenter valves manage one direction, while dual overcenter valves proficiently handle both directions.
Functions:
- Load Lowering Control: Load descent is regulated, requiring pilot pressure from an alternate line, thus ensuring a continuous oil supply to the cylinder and averting cavitation issues.
- Pressure Containment: Maintains pressure at a preset value, and provides pressure relief during peaks caused by shocks or overloads.
- Flow Arrest: Halts flow (and load) when the pump ceases operation or when the directional valve is in a neutral position.
- Free Flow for Load Lifting: Facilitates load lifting with minimal pressure drops.
These valves comprise a body that houses the following components:
- Check Valve: Allows unidirectional flow.
- Pilot Piston: Controls the gradual opening of the relief valve.
Relief Valve: Limits maximum pressure in the actuator, retains the load, and regulates its lowering upon opening by the pilot signal.
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