PSL and PSV – Proportional directional spool valve types
The HAWE PSL and PSV series are high-performance, modular, load-sensing proportional directional spool valves. They are designed to manage both the direction of movement and the stepless speed of multiple hydraulic consumers (like cylinders and motors) at the same time, completely independent of their individual loads.
- Operating Pressure : High Performance Range
- Application : Industrial & Mobile Systems
About this item
The proportional directional spool valve type PSL is suitable for constant pump systems and type PSV is for variable pump systems. The flow rates and load pressures for the individual consumers can be individually adjusted. The proportional directional spool valve type PSL and PSV can be adapted to various control tasks, e.g. for safety functions. All sizes can be combined with each other.
The proportional directional spool valve type PSL and PSV is used in mobile hydraulics, in particular in loading cranes, lifting platforms, municipal trucks, construction machines, drilling equipment and machines for forestry and agricultural purposes.
| Feature Group | Attribute / Metric | PSL Series (Open-Center) | PSV Series (Closed-Center) |
|---|---|---|---|
| System Basics | Pump Compatibility | Constant delivery (fixed displacement) | Variable displacement |
| Excess Flow Handling | Bypasses excess oil to the tank via inlet | Signals pump to scale down flow output | |
| Performance Specs | Size 2 Max Flow (Actuator/Inlet) | 40 lpm / 60 lpm | 40 lpm / 60 lpm |
| Size 3 Max Flow (Actuator/Inlet) | 120 lpm / 160 lpm | 120 lpm / 160 lpm | |
| Size 5 Max Flow (Actuator/Inlet) | 240 lpm / 300 lpm | 240 lpm / 300 lpm | |
| Size 7 Max Flow (Actuator/Inlet) | 400 lpm / 800 lpm | 400 lpm / 800 lpm | |
| Maximum Operating Pressure | Up to 420 bar (Size 5 up to 400 bar) | Up to 420 bar (Size 5 up to 400 bar) | |
| Manifold Build | 1. Connection Block | Features integrated 3-way flow controller | Direct pressure entry block (no bypass) |
| 2. Valve Sections | 2-way compensator, spool, stroke limiters | 2-way compensator, spool, stroke limiters | |
| 3. End Plate | Caps internal channels and LS-drain | Caps internal channels and LS-drain | |
| Control Types | Actuation Methods | Manual, Hydraulic, Pneumatic, Electro-Hydraulic (PWM), or CAN-Bus | Manual, Hydraulic, Pneumatic, Electro-Hydraulic (PWM), or CAN-Bus |
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