Fits any 75 GPD Producing RO or DI System Easily Power Flush your RO membrane Improve water quality and prolong the membrane life Comes with 1/4" Quick Connect Fittings for super easy Push-In installation Significantly enhance the life of your RO Membrane with the NSF iFilters Flush Valve. This flush valve provides a bypass to purge contaminates in the membrane housing and rapidly power flushing any particulates from the membrane surface. The Quick Connect ports allows for an easy Push-In installation with no tools. The iFilters flush valve works with any standard 75 GPD RO or DI system of any size. Flushing your membrane for 15-30 seconds at every filter change out is recommended to remove any carbon particles from the new filters. 100% compatible with all standard RO systems using 1/4" tubing