CR22 Microwflow Switch


  • Detects flows of less than 500ml’s per minute
  • Handles continuous flows to 4L per minute
  • Suitable for pulsed or continuous flows
  • Suits tube and pipes from 6mm to 20 mm
  • All wetted parts UPVC with VITON® seals
  • Compact all position mounting
  • 18 Bar (260PSI) Pressure rating
  • Fast response to flow loss
  • Easy to install and service
  • Simple and reliable
  • Weatherproof


The CR22 microflow switch operates on the displaced piston principle. Process liquid passing through the switch lifts a precision piston. Every time the piston is lifted a magnet sealed inside it actuates an external reed switch.
The reed switch provides a signal indicating fl ow. The CR22 can be setup as a normally on or a normally off switch that responds either to flow, or to loss of flow.

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