PF3W Digital Flow Switch - 0.5 to 100 l/min. Local or remote display

The PF2W series of flow monitors/switches are ideal for applications on non-conductive low viscosity liquids such as demineralised water (demin), water/glycol solutions and RO water that aren’t conductive enough for magnetic inductive meters, as well as normal cooling water of course. As long as it’s water like in consistency and compatible with the wetted materials the PF3W can be used. Designed for either stand-alone or OEM machine applications these versatile meters can be used as simple visual flow rate indicators, totalisers, flow alarms or to give continuous monitoring of flow performance.


  • Sizes: 3/8’, ½”, ¾”, 1” & 1.1/2”
  • Connections Styles: BSPP, BSPT & NPT
  • Body Materials: 304 Stainless Steel connections, PPS body
  • Pressure: 10 bar
  • Temperature: up to 50°C
  • Outputs: Either 2x NPN or PNP switches or 1x NPN/PNP switch and 1-5V or 4-20 mA
  • Display: Built in backlit LCD tri-colour display of flow rate and total