Pressure balance valve keeps water temperature within +/- 3 F (degree Fahrenheit). Single function operation, single handle for ease of temperature control. Includes MultiChoice valve which allows for upgrade to Dual-Function shower trim and cartridge. Lifetime faucet and finish warranty. WaterSense labeled. ADA Compliant. Touch Clean. Water efficient product meeting CALGreen standards. 2.0 GPM (gallons per minute). Single-function pressure balance cartridge. For replacement cartridge see Model No RP46074 (SKU 401225).