Hot Tub & Spa - 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

Active Filters

Sort by
Spares Available
Spares Available
  • Harwil Switch Only
  • 1/2" NPT Connection SPST
  • 1/2 AMP
  • Immersed Length from Bottom of Nut : 2-5/16"
In stock 2 in stock
In stock Same day dispatch on orders before 15:30
£77.99
Saving: £21.93
1/2" NPT Connection SPST
10 AMP
Flow: 10 GPM
Length: 2-5/16"
  • Harwil Flow Switch
  • 3/4" Rib Barb
  • Tee Style 
  • Clear Plastic
In stock 1 in stock
In stock Same day dispatch on orders before 15:30
£85.99
Saving: £12.65
1/2" NPT
3/4 Rib Barb Tee Style
Clear Plastic

 

  • Harwil Flow Switch
  • Drain Down Tee
  • 3/4"x 3/8" Barbed
In stock 8 in stock
In stock Same day dispatch on orders before 15:30
£70.49
Saving: £13.37
1/2" NPT
3/4"x 3/8" Barbed
Drain Down Tee
Clear Plastic

 

  • Harwil Flow Switch no Cables
  • 3/4" Fitting
  • Tee Style
  • Standard Immersion
In stock 4 in stock
In stock Same day dispatch on orders before 15:30
£73.49
Saving: £13.95
1/2" NPT
3/4" Tee Style
Spade Terminals

 

  • Harwil  Flow Switch Tee
  • In-Ground Assembly
  • 2.0" x 2.0" x 1/2"
  • 5m Cable

» Find out more
In stock 7 in stock
In stock Same day dispatch on orders before 15:30
£99.49
Saving: £22.96
1/2" NPT
In-Ground Assembly
2.0" x 2.0" Tee Style
5m Cabel
  • Certikin Flow Switch
  • 25 AMP
  • White
  • PVC Plastic
Available for Pre Order Special Order Item
Alert Lead time confirmed upon order
£209.49
Saving: £69.51

FLOW SWITCH: 

1-1/2" PVC SLIP CONNECTION 40017-400

In stock 2 in stock
In stock Same day dispatch on orders before 15:30
£92.49
Saving: £22.64
  • Harwil Fluid flow Switch
  • 8 to 1900 GPM & up
  • for pipes 1" -10" & up
Out of stock Out of Stock
Email me when back in stock
£438.49
Saving: £170.08

 

  • Gecko Pressure/Flow Switch
  • Cable Only
  • 180CM Length
  • Model: 9920-400124
Available for Pre Order Special Order Item
Alert Lead time confirmed upon order
£19.49
Saving: £2.04

 

  • 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
 

 

  • O Ring
  • 13mm O/D
  • 2mm Thickness
  • Suitable for Spa-Quip Optical Water Sensor
In stock 5 in stock
In stock Same day dispatch on orders before 15:30
£0.99
 

 

  • Spa-Quip / Davey Sensor
  • Detects Water through Heater
  • Suitable for Spa-Quip / Davey Packs
In stock 8 in stock
In stock Same day dispatch on orders before 15:30
£30.99
Saving: £10.29