1” Liquid Flow Switch (Paddle)


The FS1 paddle switch is intended to monitor liquid flow within pipes and provide a switched output upon detection of either a specific flow rate or flow failure. The unit screws directly into a 1″ BSPT boss and has adjustable paddle lengths.

Delivery in approximately 2-5 working days (subject to availability)



  • Dust-tight microswitch with switching contacts
  • Base in ABS, transparent PC cover
  • -40…+85 °C < 95% storage

Product Specification

  • Switch Capacity: 15 (8) A, 24…250 Vac
  • Max Liquid Temperature: -40…+120°C
  • Max Pressure: 11 bar (SF2: 30 bar)
  • Paddles: Stainless steel AISI 316L
  • Working: -40…+85°C 10…90% r.h. (without condensing)
  • Protection: IP65, class I
  • Size: 140 x 62 x 65 mm
  • Weight: 950 g
1” Liquid Flow Switch (Paddle)


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