This component is a 3/4" Male Pipe Thread Flow Switch complete with integrated housing, compatible with Sundance Spas, Jacuzzi Premium models, and select additional manufacturers.

Housing configuration features 3/4" Barb X 3/4" Barb X 3/8" Barb connections.

Important: If your original housing lacks the 3/8" Barb fitting, please select the alternate version without this port.

This normally open pressure switch activates when water circulation from your heating pump creates sufficient flow. Equipped with box-style electrical connectors typical of Sentry 850 control systems, this unit includes two pinch-style connector adapters for compatibility with alternate wiring configurations. If your system uses curly finger-style terminals found on LX systems, please choose the corresponding variant with those connectors. The 3/4" MPT threaded switch element is removable and can be transferred to different compatible housings if needed.

Additional Note: This modern housing replaces older PVC construction housings found in legacy Sundance and Jacuzzi hot tub installations. Before installation into existing housings, verify thread sizing as some older units utilized 1/2" MPT threading. Reference items visible in product images are not included with purchase.