Proportional spool valve (slip-on coil, integrated electronics) WDPFA04_NE

Proportional spool valves NG4-Mini

Direct operated proportional spool valve with 4 connections in 5-chamber system with integrated electronics. The Plug & Play valves are factory set and adjusted and have therefore a high valve-to-valve reproducibility. With protection class IP67 for the electronics, these valves are suitable for harsh environmental conditions. Proportional to the electronically transmitted command value, the spool stroke, the spool opening and the valve volume flow increase. The control takes place via an analogue interface or a fieldbus interface (CANopen, J1939 or Profibus DP). The parameterisation takes place by means of the free of cost parameterisation and diagnostics software «PASO» or via fieldbus interface. The USB parameterisation interface is accessible through a screw plug. As an option, these valves are available with integrated controller. As feedback value generators sensors with voltage or current output can be connected directly. The available controller structures are optimised for applications with hydraulic actuations

Proportional valves Proportional spool valve (slip-on coil, integrated electronics) WDPFA04_NE

Proportional spool valve with integrated

Flange construction

  • direct operated
  • Qmax = 20 l/min
  • QN max = 12 l/min
  • pmax = 350 ba


Proportional spool valves are perfectly suitable for demanding tasks due to the high resolution, large volume flow and low hysteresis. 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. Miniature values are used where both, reduced dimensions and weight are important. „PASO” is a Windows programm in the flow diagram style, which enables the intuitive adjustment and storing of all variable parameters. The data remain saved in case of a power failure and can also be reproduced and transferred to other DSV.