Flow Switches

In this section you will find our range of flow switches for your hot tub or spa, from brands such as HydroAir and Harwil.

Need help? Ask us a question

In this section you will find our range of flow switches for your hot tub or spa, from brands such as HydroAir and Harwil.

Need help? Ask us a question

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Spares Available
Spares Available
  • Gecko Pressure/Flow Switch
  • Cable Only
  • 180CM Length
  • Model: 9920-400124
Out of stock Out of Stock
Email me when back in stock
£18.99
Saving: £8.19
  • Harwil Flow Switch
  • 3/4" Rib Barb
In stock 3 in stock
In stock Same day dispatch on orders before 14:30
£64.99
 
  • Harwil Flow Switch
  • 3/4" Socket
  • Standard Immersion
In stock 6 in stock
In stock Same day dispatch on orders before 14:30
£69.99
 
  • Harwil Flow Switch
  • Drain Down Tee
  • 3/4"x 3/8" Barbed
In stock 14 in stock
In stock Same day dispatch on orders before 14:30
£74.99
Saving: £9.01
  • Harwil Flow Switch
  • Long Reed
  • 0.50" NPT
Out of stock Out of Stock
Email me when back in stock
£49.99
 
  • HydroAir Compression Nut
  • Suitable for Thermonsensor
  • Fits Thermo Sensor 20-0502
  • Use with Reducing Tees with 1/2" Tee
Available for Pre Order Special Order Item
Alert Lead time confirmed upon order
£2.49
 
  • HydroAir Water Level Sensor
  • Mechanical Float Switch Included
Discontinued Discontinued
  • HydroAir Water Level Sensor
  • 12v - 25-0211-12
  • Fits classic line variable boxes
In stock 5 in stock
In stock Same day dispatch on orders before 14:30
£26.99
Saving: £9.01
  • HydroAir Water Level Sensor
  • 5v JST
  • style snap-on connector
  • Fits Classic line boxes
Available for Pre Order Available for Pre Order
Available for Pre Order Estimated Dispatch 14 Days
£27.50
Saving: £4.00
  • Koller Temperature Sensor
  • 2.5m Cable 
  • IP 68 
  • MPN: 012 1021B
In stock 2 in stock
In stock Same day dispatch on orders before 14:30
£39.99
 
  • Koller Water Level Sensor
  • For Polyester Tubs
  • Free Cable End 1,6 m
  • 9 - 30V DC
Available for Pre Order Special Order Item
Alert Lead time confirmed upon order
£34.99
 
  • Spa-Quip / Davey Sensor
  • Detects Water through Heater
  • Suitable for Spa-Quip / Davey Packs
In stock 4 in stock
In stock Same day dispatch on orders before 14:30
£27.49
Saving: £8.68
  • Universal Water Level sensor 
  • 4.5-30v JST
  • style snap-on connector
In stock 8 in stock
In stock Same day dispatch on orders before 14:30
£42.99
Saving: £13.70