Pneumatically operated spool valve WDLFA03

Spool valves direct operated pneumatically actuated NG3-Mini

Direct operated spool valve, pneumatically operated, with 4 connections in a 5 chamber system. Spool detented or with spring. Without actuation, the spool is held in the center position by the spring (4/3), or switched back to the offset position (4/2). With the detent, the spool is held in the last switching position selected. Precise spool fit, low leakage, long service life time. Spool made from hardened steel, body from high quality hydraulic cast steel.

Switching valves Pneumatically operated spool valve WDLFA03

Spool valve

  • Flange construction
  • pneumatically operated
  • 4/2-way impulse valve
  • 4/3-way with spring centred mid position
  • 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. Miniature values are used where both, reduced dimensions and weight are important.