The Lippert Flow Max RV Toilet Valve Kit is a genuine replacement part and is compatible with all RV toilets using a 1/2" NPT inlet and 1/2" outlet hose or grommet.• Replacement valve kit for Flow Max RV toilet• Compatible with all RV toilets using a 1/2" NPT inlet and 1/2" outlet hose or grommet• Easy to install Easy to install | Lippert Flow Max Replacement RV Toilet Valve Kit