Proportional 2-way flow control cartridge, explosion protected Ex d II C QNBPM22

Proportional throttle valves, proportional flow control valves M22x1,5

Direct operated, pressure compensated proportional flow control valve in screw-in cartridge construction for cavity according to ISO 7789. With the solenoid deenergised, the control spool is held in the closed position by a spring. The change of the electric current is followed by a proportional volume flow change. From the input (1), the fluid flows over a throttle and a control spool to the controlled output (2). The pressure tight encapsulated Ex-protection solenoid coil prevents an explosion on the inside penetrating to the outside as well as an ignitable surface temperature. ​ ​ ​

Proportional valves Proportional 2-way flow control cartridge, explosion protected Ex d II C QNBPM22

Proportional 2-way flow control cartridge​

  • direct operated
  • Qmax = 28 l/min
  • QN max = 25 l/min
  • pmax = 350 bar

Application

Proportional flow control valves are suitable for precise speed ­control, where the load current has to be maintained constant independent of the input and output pressure. These valves are suitable for applications in explosion-hazard areas, open cast and also in mines. The screw-in cartridge is perfectly suitable for installation 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. ​ ​ ​