Roller operated spool valve WDTFA03

Spool valves direct operated manual actuation / mechanical actuation NG3-Mini

Direct operated valve, roller operated with 4 connections in 5 chamber design. Without actuation, the spool is switched back to the offset position. Precise spool fit, low leakage, long service life time. Spool made from hardened steel, body from high quality hydraulic cast steel.

Switching valves Roller operated spool valve WDTFA03

Spool valve

  • Flange construction
  • roller operated
  • 4/2-way with spring reset
  • Qmax = 8 l/min
  • pmax = 350 bar


Spool valves are mainly used for controlling direction of movement and stopping of hydraulic cylinders and motors. The direction of movement is determined by the position of the spool and its symbol. Manually or mechanically operated valves are particularly suitable for use in installations where no electric current is available or for applications in explosion hazard areas. Miniature values are used where both, reduced dimensions and weight are important.