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…