Whirpool Bath - 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
  • Harwil Flow Switch Only
  • 1-1/2" NPT
  • AMP 2
  • Immersed Length from Bottom of Nut: 2-9/16
Out of stock Out of Stock
Email me when back in stock
£109.49
Saving: £42.57
1-1/2" NPT
2 AMP
Flow: 16 GPM
Length: 2-9/16"
  • Harwil Switch Only
  • 1/2" NPT Connection SPST
  • 1/2 AMP
  • Immersed Length from Bottom of Nut : 2-5/16"
In stock 4 in stock
In stock Same day dispatch on orders before 15:30
£71.99
Saving: £27.93
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
Awaiting delivery Out of Stock
Email me when back in stock
Awaiting delivery More stock (1) due on 21/05/2019
£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 10 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 5 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 2 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

 

  • 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
 

 

  • 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 3 in stock
In stock Same day dispatch on orders before 15:30
£26.99
Saving: £9.01

 

  • HydroAir Water Level Sensor
  • 5v JST
  • style snap-on connector
  • Fits Classic line boxes
In stock 5 in stock
In stock Same day dispatch on orders before 15:30
£28.49
Saving: £6.92

 

  • Koller Temperature Sensor
  • 2.5m Cable 
  • IP 68 
  • MPN: 012 1021B
In stock 2 in stock
In stock Same day dispatch on orders before 15:30
£39.99
 

 

  • Koller Water Level Sensor
  • For Polyester Tubs
  • Free Cable End 1,6 m
  • 9 - 30V DC
Available for Pre Order Available for Pre Order
Available for Pre Order Estimated Dispatch 99 Days
£34.99
 

 

  • Spa-Quip / Davey Sensor
  • Detects Water through Heater
  • Suitable for Spa-Quip / Davey Packs
In stock 10 in stock
In stock Same day dispatch on orders before 15:30
£27.49
Saving: £8.68

 

  • Universal Water Level sensor 
  • 4.5-30v JST
  • style snap-on connector
In stock 5 in stock
In stock Same day dispatch on orders before 15:30
£44.99
Saving: £10.76