Description
Direct-fit Flow Switch for Sundance & Jacuzzi Spas
The Harwil HRQ12DSC234NPT is a drop-in flow switch designed for Sundance® and Jacuzzi® spa systems. It monitors water flow and only allows the heater and related equipment to operate when adequate circulation is present, protecting the heater from dry-fire and preventing premature component failure. This replacement assembly is supplied with a clear tee and multi-conductor cable for reliable connection to OEM control systems.
Key Features
Direct replacement for many Sundance/Jacuzzi applications — listed for 2001–2016 models and common 2- and 3-pump configurations.
Clear tee housing with white plug connector for easy inspection and service.
Triple-barb configuration: two 3/4" hose barbs plus a 3/8" barb to match common plumbing layouts.
Built-in flow-sensing element that activates only when sufficient circulation is detected, helping prevent heater burn-out.
Long insulated cable (approximately 63 inches total wire length on common listings) with premium-grade conductor for dependable signal transmission.
Fast response and simple inline installation — compatible with standard spa plumbing tees and fittings.
Why technicians and spa owners choose the HRQ12DSC234NPT
This flow switch is chosen for its compatibility, straightforward installation and protective function. Service technicians appreciate the clear tee and standard barb sizes that simplify plumbing repairs, while owners value the protection it provides to the heater and control system. Use the HRQ12DSC234NPT as a reliable original-equipment-style replacement to restore proper flow detection and safe heater operation without modifying existing controls.
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