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Kelco F21S Flow Switch


The Kelco F21S is a tough but highly sensitive paddle flow switch suitable for a wide range of flow control applications. 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 F21 a very versatile flow switch.


  • 1″ BSP connection
  • Manual override built in
  • 0-500VAC 15Amp S.P.D.T switch
  • 18-200BAR pressure rating
Fact Sheet