counterbalance valve

Counterbalance Valve are used to control the actuator movements and block in one direction. In order to have the descent of a load under control and avoid the load's weight being carried away the valve will prevent any cavitation of the actuator. Type "A" is different due to the connection positions and the pilot ratio. Haohong Hydraulic also has Monoblock Control Valve and Pressure Relief Valves.

Overcenter valves are used where there is vital importance in the system. VBCD SE FL series are used to control actuator’s movement and block in one direction. Pressure is adjustable and sensitive. They can be used on crane booms.

SINGLE OVERCENTER VALVE

VBCD 3/8 SE FL | V0400

Overcenter valves have great importance in hydraulic systems and have following features:

Load holding: The overcenter valve prevents the movement of a load when the directional valve is in the neutral position, permitting the use of open center directional valves and negating leakage past the spool of closed center directional valves.

Load control: The overcenter valve prevents the actuator running ahead of the pump due to the load-induced energy, thereby eliminating cavitation in the actuator and loss of control.

Load safety: In the case of hose failure, an overcenter valve mounted onto or into a cylinder will prevent uncontrolled movement of the load. When a cylinder is used in a boom, as in a crane, then hose failure protection is vital as the loss of load control could cause damage to people or property.

Overcenter valves are used where there is vital importance in the system.

VBCD SE FL series are used to control actuator’s movement and block in one direction. Pressure is adjustable and sensitive. They can be used on crane booms. and can easily mounted on cylinder with flanged ports. Standard pressure setting is 320 bar.