OM VBCD 3/4" DE DOUBLE OVERCENTRE VALVES
V0431 3/4” BSP – Double-acting counterbalance and load holding valve
Product description:
The V0431 VBCD 3/4” DE double-acting counterbalance and load holding valve is designed to control and securely hold hydraulic actuators in both directions. The valve ensures controlled lowering and lifting of the load, preventing runaway caused by the load’s own weight and avoiding actuator cavitation. Its in-line design allows universal installation even in high-load hydraulic systems.
Main features:
- Type: VBCD DE – double-acting counterbalance and load holding valve
- Part number: V0431
- Connection (V1–V2 / C1–C2): G 3/4”
- Max. flow rate: 105 l/min
- Maximum operating pressure: 350 bar
- Pilot ratio: 1 : 5.5
- Standard pressure setting: 320 bar
- Housing material: Steel (zinc-plated)
- Weight: 3 kg
Working Principle
An overcenter valve functions as a combination of a check valve and a pressure control valve. In normal operation, it prevents flow in one direction until pilot pressure is applied from the opposite side, allowing controlled actuator movement. This design is particularly useful in load-holding applications, as it keeps the actuator locked in position when the pump is idle or during pressure loss.
The double version includes two overcenter circuits, one for each actuator line, ensuring safe bidirectional control. The internal pilot lines cross to engage the opposite side’s check valve only when sufficient control pressure is present, ensuring precise motion and preventing collapse or runaway movements.
