1CEBD90 Overcenter valve - Fully balanced, pilot assisted relief with check

1CEBD90 - Overcenter valve

Fully balanced, pilot assisted relief with check 90 L/min (23 USgpm) • 270 bar (4000 psi)

Description

Overcenter valves give static and dynamic control of loads by supplying a counterbalance pressure to the actuator. They prevent runaway in the event of hose burst and hold the load with minimal leakage. The pressure balanced valve is unaffected by back pressure, allowing service line reliefs to operate and for the valve to be used in regenerative or proportional valve systems. The overcenter valve should be mounted either into, onto or as close to the actuator as possible to give maximum protection. Single overcenter valves control unidirectional loads such as in aerial platforms, cranes or winches and dual overcenters are suited to bi-directional motion such as wheel motor applications or cylinders going over center.

Operation

The check section allows free flow into the actuator then holds and locks the load against movement. The pilot assisted relief valve section will give controlled movement when pilot pressure is applied. The relief section is normally set to open at a pressure at least 1.3 times the maximum load induced pressure but the pressure required to open the valve and allow movement depends on the pilot ratio of the valve. For optimization of load control and energy usage, a choice of pilot ratios is available.

Features

Cartridge is economical and fits simple ‘dual purpose’ cavity. Allows quick, easy field service - reduces down time. Directly interchangeable with 30 litres/min pilot check valve.

Performance Data

• Cavity: x
• Flow Rating: x
• Typical Pressure: x