Fleck (60104) 2900 Lower Piston Assy. NHWBP Blue & White (ST-15) Tank & Cover Only 15 GALLON TANK & COVER ONLY It's commonly used for whole-house

It's commonly used for whole-house sediment filtration and as pre-filtration for reverse osmosis systems

This media requires initial regeneration prior to first use

Polyphosphate

Too high and the tank won't absorb pressure spikes

1 micron absolute rating mechanically traps Cryptosporidium and Giardia cysts

Fleck (60104) 2900 Lower Piston Assy. NHWBP Blue & White (ST-15) Tank & Cover Only 15 GALLON TANK & COVER ONLY It's commonly used for whole-houseFleck Control Valve Component Fleck 60104 2900 Lower Piston Assembly NHWBP Factory grade replacement piston assembly engineered for no hard water bypass in Fleck 2900 control valves OEM Fleck part No hard water bypass design Direct fit 2900 valves The Fleck 60104 lower piston assembly is the critical sealing component in 2900 series control valves, designed specifically to eliminate hard water bypass during regeneration cycles. This NHWBP