Dual Overcenter Valves
Balancing valves play a crucial role in hydraulic systems, particularly in construction machinery and other equipment that rely on gravity for lowering. These valves feature a sophisticated hydraulic circuit designed to harmonize the return oil back pressure with the variable load. This ensures that the load can be securely halted at any desired position, providing precise control over the movement when the load descends. Such meticulous balance control prevents rapid descent, thereby safeguarding structural components, hydraulic parts, and pipelines from potential damage.
Our overcenter valves are engineered for exceptional performance, providing precise control over the stopping and movement of an actuator. Single overcenter valves manage motion in one direction, while dual overcenter valves offer control in both directions, ensuring smooth and reliable operation.
Key Functions:
- Load Lowering Control: The load only descends with pilot pressure from the opposite line, ensuring a steady oil supply to the cylinder and preventing cavitation issues.
- Pressure Containment: Maintains pressure at the set value and relieves any peaks caused by shocks or overloads for consistent operation.
- Flow and Load Arrest: Halts the flow and load movement when the pump is idle or the directional valve is neutral, maintaining stability.
- Free Flow for Load Lifting: Facilitates load lifting with minimal pressure drops, ensuring efficiency and ease.
These valves are meticulously crafted and include the following essential components:
- Check Valve: Allows flow in a single direction, ensuring unidirectional operation.
- Pilot Piston: Enables controlled and gradual opening of the relief valve for smooth operation.
- Relief Valve: Limits the maximum pressure within the actuator, holding the load securely and managing its descent during valve opening, as regulated by the pilot signal.
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