EcoPower toilet flushometer valve, top spud - exposed model, 1.28 Gpf. Neutral rough-in. Nickel Chrome Plated Finish, Neutral Rough Utilizing the same proven technology as our 1.6 GPF EcoPower flush valves, our new 1.28 GPF EcoPower High Efficiency Toilet (HET) flushometer valves save 20% more water than standard 1.6 GPF valves and an impressive 63% water savings over traditional 3.5 GPF flush valves; and TOTO 0.5 GPF EcoPower High Efficiency Urinal (HEU) flushometer valves provide a 50% water savings over 1.0 GPF urinal flush valves, allowing facilities to save thousands of dollars—and conserve thousands of gallons of water — every year. TOTO HET and HEU flushometer valves can help earn one LEED credit and help you satisfy the growing demand for high efficiency, water-conserving plumbing fixtures in the commercial sector. Our HET and HEU flushometer valves feature the EcoPower hydro-powered, self-generating power system; a superior piston valve that resists warping; a neutral rough-in; and an automatic flushing system that provides a “courtesy flush” every 24 hours. In addition, our 1.28 GPF EcoPower HET valves are also available for use with both standard vacuum breakers and 24” vacuum breakers and feature a manual flushing button.