Proportional spool valve cartridge WDPPU08_12

Proportional spool valves 3/4"-16UNF

Direct operated proportional spool valve in screw-in cartridge construction. Precise spool fit, low leakage, long service life time. The volume flow adjustment takes place by a Wandfluh proportio- nal solenoid. The valve works according to the pull-push principle. With the control of the solenoids, the volume flow direction P to A or P to B can be selected. Thanks to the optimum spool form, sen- sitive movement processes are possible. For the control, Wandfluh proportional amplifiers are available (see register 1.13).

Proportional valves Proportional spool valve cartridge WDPPU08_12

Proportional spool valve
Screw-in cartridge construction

  • direct operated
  • Qmax = 23 l/min
  • QN max = 12 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.