Harwil Q8DS Flow Switch [1" MPT] [25A] [w/Drag Strip] (Q8DS/A/10502) lightingparts and this Filbur FC-0470 cartridge

and this Filbur FC-0470 cartridge is designed for 7CH-752 and PTL75XW-F2M applications

This version features a massage configuration intended to provide focused massage-style water action

Supports energy-efficient circulation

When a check valve becomes unreliable

The FC-2392 reference gives this part practical value because replacement cartridges work best when the new element matches the intended housing and service application closely

Harwil Q8DS Flow Switch [1" MPT] [25A] [w/Drag Strip] (Q8DS/A/10502) lightingparts and this Filbur FC-0470 cartridgeA 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