20922C203 Piston Assy. - Isobar 1 Filter - Orange Cap (Old Style) Sidewindr The D-15 Vertical Adapter Set

The D-15 Vertical Adapter Set allows you to mount the bypass valve vertically rather than horizontally

Fleck 5600 or 2510 softener & filter valves

this motor will not be compatible with your powerhead

We recommend installing a new seal & spacer kit anytime a piston is being replaced

with a filtration level of 10 microns (nominal)

20922C203 Piston Assy. - Isobar 1 Filter - Orange Cap (Old Style) Sidewindr The D-15 Vertical Adapter SetReplacement piston assembly for WaterSoft Isobar 1 filter control valves manufactured prior to 2010. If you aren't sure how old yours is, take off the back cover and look at the color of the piston cap (also called the "end plug"). If your filter has an orange cap like this one, then you need to use this piston. If your piston has a White Cap, you need the 20561X254 If your piston has a Black Cap, you need the 20562X254 Note: We recommend installing a