The SpectraPure Automatic Shut Off Float Kit with 1/4" Fittings (ASOFK) is designed for use with RO and RODI systems, providing a convenient solution for automatically shutting off both waste and product water. This kit includes an ASO valve, float valve, and 1/4" fittings, making it easy to install and integrate into your system. It's commonly used in drinking water systems to ensure positive shutoff when water reaches the desired level, though it is not recommended for aquarium evaporation replacement.