Flow switches are less common in hot tubs than pressure switches. They detect water flow. Water flow moves a tiny paddle that operates a micro switch.
This section also represents the only Harwil flow switches available.
It is EXTRTEMELY important that you follow dimensions and NOT Q-12 codes.
If you Harwil switch is not here, we cannot help - s...
Flow switches are less common in hot tubs than pressure switches. They detect water flow. Water flow moves a tiny paddle that operates a micro switch.
This section also represents the only Harwil flow switches available.
It is EXTRTEMELY important that you follow dimensions and NOT Q-12 codes.
If you Harwil switch is not here, we cannot help - sorry.
THIS IS THE MOST COMMON HARWIL. This is the switch ONLY and will fit the three styles of Tee, pictured. With a cable and plug. Thread diameter : 1" - 26mm Grey probe length : 1" - 26mm COMPARE THESE DETAILS WITH WHAT YOU HAVE ! Read down.
Plastic assembly 3/4" x 3/4" barbs at each end and fitted with switch Q-12DS Thread diameter : 1"Grey probe length : 1-1/4" If you don't need the plastic assembly, just buy the switch shown below as an accessory.
Plastic assembly 3/4" x 3/4" x 3/4" fitted with switch Q-12DS Thread diameter : 1"Grey probe length : 1-1/4" If you don't need the plastic assembly, just buy the switch shown below as an accessory.
60-1008 Long probe version, Length of grey probe arm: 46mm (1-7/8") Outer thread diameter: 20mm (3/4"), Total Length: 90mm.
Flow Switch 1A 3/4" Barb x 1/2" Slip 24" Cord w/2 Pin Connector. Used on Dimension 1 Spas since it has a socket end on the plastic tee to be glued onto the Laing heater. If you don't need the plastic assembly, just buy the switch shown below as an accessory.