When there is a lot of back pressure on the pure water side of your system the piston moves to close off the water supply to the system

and reduced efficiency

No other warranties with respect to the units other that those expressly included in this warranty

Your meter will be perfectly fine and the small extra bottle is included for this purpose

1/4" Push in Fittings (sharkbite/QC) All of our inline filters have easy to use push in quick connect fittings

Cation DI Resin Cartridge 10" Color Changing 10.7gal/16"x26" When there is a lotCATION DI Cartridge Color Changing Nuclear Grade Single Bed CATION Resin Professionally packed in a standard 10" refillable cartridge the same day you order Sealed in a mylar bag to guarantee freshness. Our standard 10" refillable cartridge is professionally packed with color changing nuclear grade CATION di resin sealed in a mylar bag. The color changes from purple to amber as the resin exhausts. This helps you to visually keep track of the quality