20009X231 Final Rinse Piston CSA its circuit board is not

its circuit board is not compatible with the Final Rinse Piston

Piston assembly used on all residential DROP control valves

Please note that the male drain line flow control housing shown in #18 has been replaced with a female threaded version

Filter Ag™ media has many outstanding advantages over the more common granular filter medias used for suspended solids reduction

20009X231 Final Rinse Piston CSA its circuit board is notThe Final Rinse Piston is only compatible with the following units: CSI Nitro, Nitro Pro, and WaterSoft Centuri filters manufactured after 6 1 2015 (or ones that have previously been upgraded to the final rinse piston). Any CSI Sidekick Any Water Soft Sidewindr Any Clearion Sidekick If your unit uses the Final Rinse Piston, it will have a red mark on the top, as shown in the photo. If your unit uses the standard piston (no red mark), its circuit board