Harwil Q-12DS-C2 in a tee
This flow switch, with its characteristic tee-mounted configuration is commonly found in Sundance and Jacuzzi spas, among others.
- Sundance Spas: 850/880 Series Maxxus, Optima, Cameo, Majesta, Altamar, Marin 06/1999-2015, 880 Aspen 2012-2015, 850/880 Capri 1 pump 2001-2015
- Jacuzzi: J-300 LCD Series Models, 2002+ (with box end connectors)
It comes with a 1-metre cable, with a 3-pin female plug.
The transparent tee has barbed connections for two 3/4" and one 3/8" pipes. The same flow switch is also available in a straight connector, also transparent. It is not currently available as a standalone part, without any pipe mounting.
Dimensions
Length: 124 mm
Maximum height: 98 mm
Flow switch dimensions (size "Small", in red on the diagram)
Thread diameter: 27 mm
Body length: 28 mm
Note that there are several versions of this Harwil flow switch, all bearing the reference Q-12DS-C, with different thread lengths and sizes (see diagram opposite). This is the "Small" size, in red on the diagram, which is not compatible with this Harwil flow switch for Astrel heaters (which is in "Large" size), although it has the same reference.
Part numbers
Sundance Spas and Jacuzzi: 6560-860 or 26-455-1002
Harwil (flow switch) : Q12DSC2-SUN860
Older part numbers : SD2560-040, Q-12DS-CS-MK/SUN860, Q12DSC2/SUN860
