Skip to content

Kelco F21 25mm Heavy Duty Flow Switch

Sale Sale
Original price $550.00
Original price $550.00 - Original price $550.00
Original price $550.00
Current price $415.76
$415.76 - $415.76
Current price $415.76

Kelco F21 25mm Heavy Duty Flow Switch





The F21s Series 25mm flow switch is a tough but highly sensitive paddle flow switch suitable for a wide range of flow control applications in both hot and cold liquids. The electrical housing of the switch is a separate assembly and locks onto the wet end of the switch. It can be easily and safely removed for servicing, without disturbing electrical wiring. This unique feature, and the inclusion of a built in manual override make the F Series a very versatile flow switch.

The electrical module of the F series flow switch is completely separate from the process connection and wet end of the switch. The wet end assembly and the electrical module lock together with a single externally accessible screw. This feature allows the flow switch to be disassembled and unscrewed from pipework without the need to disturb electrical wiring. All F series flow switches are supplied with a glass fibre reinforced paddle. The paddle can be cut and shaped as required to suit pipework 25 mm (1”) or larger. A unique feature of the F seies flow switch is its built in manual override. The manual override allows the flow switch to be switched on at any time at the press of a button regardless of lack of flow. Using the manual override allows pumps to be manually started at any time by simply pressing the button. It also makes the testing and commissioning of systems very simple.

Our well proven magnetic repulsion system is built into each F series flow switch and couples the paddle’s movement to the high compliance switch through a double wall of solid material. The result is a high-pressure flow switch with no seals, diaphragms or bellows or other points of potential failure. The F series flow switch is available with a 316 stainless steel or Polypropylene high pressure process connection. There are models to suit most applications including use in seawater, bore water, acids, and alkalis and in many chemical solutions.

  • Australian Made
  • 0 to 500V AC 15 Amp S.P.D.T switch
  • Low Voltage Gold contact model also available
  • 316 Stainless or Polypropylene models
  • 3/4” & 1” models available with BSP or NPT threads
  • Comes with built in Manual Overide
  • Sleek modular construction
  • High pressure 400 Bar 5800 psi models available Seal-less magnetic drive
  • Weatherproof IP67 housing
  • Easily serviceable