Flow Switch

The Harwil Q-12DS50 is a paddle-type flow switch that mounts in the plumbing line of a Jacuzzi or Sundance whirlpool bath, signaling the control system to enable pump and heater operation when water is flowing.

Key Features

• 3/4" slip plumbing connection
• 2.5A rating
• 3.5 ft, 18/3 cable
• Factory-set flow activation point

Compatibility

• Jacuzzi whirlpool bath
• Sundance whirlpool bath
• Does not fit Q-12DS-C2/2/6M/NO/4F (Beach Comber, Molex connector) or Q12DSMSC (1/2" MPT Sundance OEM)

The flow activation point is factory set; replace like-for-like rather than adjusting the trip point in the field.

Harwil sells similar-looking Q-12DS variants with different connectors or connection sizes, such as the Molex-equipped Q-12DS-C2 and the 1/2" MPT Q12DSMSC, which are not interchangeable with this 3/4" slip Q-12DS50.