Harwil Q8DS Flow Switch [1" MPT] [25A] [w/Drag Strip] (Q8DS/A/10502) lightingparts or no longer changes state

or no longer changes state correctly with system pressure

When a check valve becomes unreliable

It is a strong replacement choice when both appearance and performance need to be restored together

When fill water contains unwanted sediment or impurities

Installing the correct Pentair/Letro impeller can help restore hydraulic performance and improve the quality of the booster pump rebuild

Harwil Q8DS Flow Switch [1" MPT] [25A] [w/Drag Strip] (Q8DS/A/10502) lightingparts or no longer changes stateA flow switch helps confirm water movement before connected equipment is allowed to operate, and this Harwil Q8DS version is a 25 amp model with a 1 inch male pipe thread connection and drag strip using the Q8DS A 10502 reference. Heavier duty flow switches like this are useful where the application calls for stronger switching capability and dependable response in the water path. This switch has practical value because the drag strip design and