UB25 Series Flow Switch


  • Australian made
  • Suits 25NB (1 Inch) Pipework
  • Versatile all position mounting
  • 200Bar 290Psi Pressure rating
  • Diesel and oil suited model available
  • IP67 Weatherproof housing
  • Solid machined Stainless Steel body
  • High flow through rating
  • Handles liquids up to  90°C


The UB25 Series inline flow switches are magnetically actuated piston style sensors that switch in response to very low fluid flows or flows up to 100L/min. These switches are ideal for all types of pressure boosting pump control and for the control of commercial or domestic hot and cold water systems.

The UB25 flow switch is supplied as standard fitted with a magnetic piston retainer that allows the switch to be oriented in any required position in pipework. In vertical pipe work flow can be either upward or downward through the switch. There are no springs in the wetted area of the switch, which with the magnetically isolated piston provides an exceptionally reliable mechanism.

For monitoring of industrial safety showers where extreme reliability is paramount we recommend our UB25-C model.

See the data sheet linked below for more information on the available models in the UB25 Series and the ordering codes.

More Information


For assistance in choosing the correct product for your needs, check out our Product Selection Guide.