American Standard Flush Valve, Ultima™ Selectronic® Collection, Water Closet/Sensor Operated Toilet Fixture, C Alkaline Power Source, 1.28 gpf Flush, 1 in IPS Inlet, 1-1/2 in Spud Coupling, Diaphragm Valve Design, Connection Location: Top Spud, 8 to 48 in Sensor, 25 psi Flowing/80 psi Static Pressure, Brass, Polished Chrome