Hydraulic operated spool valve AP4_6

Spool valves direct operated hydraulically actuated NG6

Direct operated spool valve hydraulically operated via pilot port 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 Hydraulic operated spool valve AP4_6

Spool valve

  • Flange construction
  • hydraulically operated
  • 4/2-way impulse execution detented
  • 4/3-way with spring centred mid position
  • 4/2-way with spring reset
  • Qmax =30 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.