Proportional 2-way flow control cartridge (all-in-one) QSPPU10_25

Proportional throttle valves, proportional flow control valves 7/8"-14UNF

Pilot operated, load-compensated proportional flow control poppet valve as screw-in cartridge for UNF cavity. When the solenoid is deenergised, the control spool closes practically leakage-free. With increasing solenoid current the flow from inlet port (3) to the regulated outlet port (2) increases independently of the load pressure. For the control, Wandfluh proportional amplifiers are avai­lable (see register 1.13).

Proportional valves Proportional 2-way flow control cartridge (all-in-one) QSPPU10_25

Proportional 2-way flow control poppet cartridge​

  • pilot operated
  • Qmax = 35 l/min
  • QN max = 25 l/min
  • pmax = 350 bar


These valves are used in hydraulic systems, in which the positioning of loads and the simultaneous controlling of the lowering of these loads are demanded. The insensitivity to load changes and the very small leakage are a great advantage for this purpose. They are ideally used in the bypass to the pump. The screw-in cartridge is perfectly suitable for installatin in control blocks. For machining the cartridge cavity in steel and aluminum blocks, cavity tools are available (hire or purchase). Please refer to the data sheets in ­register 2.13.