Retrofit Flush Valve, Replaces most Sloan, Zurn, Toto URINAL FLUSH VALVES. This purchase includes: Flush Valve, 4 AAA Batteries Pre-installed. Please Note: Retrofit unit Featuring: Solid Brass Body. Solid Brass Piston Type Valving System. Low Consumption 0.5 gallons per flush. Available in other flow options, please call. Manual Flush Button. Particle Strainer Built-In for Longer Life Expectancy. Hermetically Sealed Sensor and electronics. Visible Low Battery Indicator Built into Sensor Capsule. Standard AAA batteries included in the purchase. Triple Chrome Plating Process For Longer Fasting Finish.