20018X231 Universal DROP Piston assembly Isobar 1 Includes power supply and slide

Includes power supply and slide cover

DROP FC-40

The large and irregular shape prevents the screening and caking of sediment in the top several inches of the filter bed as happens in the typical sand filter

Also used with the D-HPS DROP Home Protection Valve

indicated with a blinking x 10 image

20018X231 Universal DROP Piston assembly Isobar 1 Includes power supply and slidePiston assembly used on all residential DROP control valves. This piston will have a blue mark on the top of the yoke. Also compatible with: CSI Signature 4 WaterSoft Isobar 4 Clearion 400 Series Anytime you're replacing a piston, we recommend installing a new seal & spacer kit.