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Granulated Activated Carbon can be used in upflow or downflow filters
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
**warning: not for use with units that contain KDF media or KDF foam cubes
All parts can also be purchased individually by selecting that item number in the drop-down menu
Also used with the D-HPS DROP Home Protection Valve
20018X231 Universal DROP Piston assembly Isobar 1 Granulated Activated Carbon can bePiston 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.
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