Kohler K737KNA Master Shower 3-Way Diverter Valve 18.0 gpm (gal. per minute) flow rate when using one outlet MasterShower diverter valve ships as a three-way diverter valve, but can easily be configured for use as a two-way diverter valve Patented K-joint installation ensures consistent trim appearance, regardless of variability in valve rough-in (included with trim)