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WalvoilHydraulic Valve
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Walvoil
Hydraulic Valve
- Pressure relief valves These valves are used as pressure limiting devices to protect hydraulic systems.
- Pressure reducing valves Pressure reducing valves are pressure limiting devices that limit pressure in one portion of a circuit while leaving system pressure unaffected.
- Sequence valves As the name implies, sequence valves control a sequence of operations. Sequence valves usually use a pressure signal to shift a spool, thereby opening or closing a flow path at a pre‑set pressure.
- Automatic cut-off valve They allow the pump unload when the setting pressure is reached; they permit also the maintenance of the pressure using an accumulator
- Regenerative valve They allow the connection between rod and base of an hydraulic cylinder. They permit the movement reversal using a pressure signal.
- High/Low pressure cut-out valve In a system powered by two pumps, the valve allows operations with a fast/slow sequence.
- Check valves Check valves allow free flow in one direction and block flow in the opposite direction.
- Pilot operated check valves These valves are used to prevent a load from dropping in case of hose or tube failure or from drifting caused by directional control valve spool leakage.
- Needle valves Needle valves provide adjustable, non-compensated flow control. They are available with standard or fine adjust, and with a variety of knob adjusting options.
- Flow control pressure compensated valves Pressure compensated flow control valves are used to limit or regulate flow.
- Counterbalance (overcenter) valves Counterbalance valves are used to control the motion of a load in the following ways: - prevent a load from dropping in case of hose or tube failure or from drifting caused by directional control valve spool leakage. - provide smooth, modulated motion when the load is in a lowering or run-away mode or when the directional control valve is suddenly closed.
- Directional solenoid valves Solenoid valves are electrically-operated, on-off poppet or spool-type valves for load holding, blocking, or directional control applications. 2 way pilot operated valves - 3 way 2 positions valves - 4 way 2 positions valves - 4 way 3 position valves.
- Automatic reversing valves These valves are used to switch automatically the oil flow direction by using two type of control: mechanical and pressure increase.
