Ultima Manual Toilet Flush Valve, Piston-Type, 1.1 gpf/4.2 Lpf

This High Efficiency 1.1 gpf flush valve delivers 31.3% water savings when compared to standard 1.6 gpf toilet flush valves.NOTICE: To ensure proper performance, this 1.1 gpf (4.2 Lpf) Toilet Flush Valve must be installed on a flushometer bowl that is certified (per ASME A112.19.2/CSA B45.1) to operate at 1.1 gpf (4.2 Lpf).