Proportional spool valve cartridge WVPPM33_90

Proportional spool valves M33x2

Pilot operated proportional spool valve in screw-in cartridge cons- truction. Precise spool fit, low leakage, long service life time. Spool made of hardened steel. The valve is controlled externally through a pilot pressure via the x and y connections. Without control, the piston is held in the central positon by a spring. Proportional to the pilot pressure, the spool opening and the valve volume flow increa- se. Thanks to the optimum spool form, sensitive movement proces- ses are possible. For the control, Wandfluh proportional pressure valves (see register 2.3) and Wandfluh proportional amplifiers (see register 1.13) are available.

Proportional valves Proportional spool valve cartridge WVPPM33_90

Proportional spool valve
Screw-in cartridge construction

  • pilot operated
  • Qmax = 150 l/min
  • 1 volume flow level
  • QN max = 90 l/min
  • pmax = 350 bar


Proportional spool valves are perfectly suitable for demanding tasks due to the high resolution, large volume flow and low hyste- resis. The applications are in the industry as well as in the mobile hydraulics for the smooth control of hydraulic actuators. Some examples: control of the rotor blades of wind generators, forestry and earth moving machines, machine tools and paper production machines, simple position controls, robotics and fan control.