This Single Control Pressure Balance Mixing Valve Less Screwdriver Stops is automatically balances incoming hot and cold water pressure to provide a consistent, comfortable temperature. The Danze is focused on creating products that are an expression of their customers and their relentless search for something beautiful, distinctive and refreshing. Solid brass construction Ceramic disc valve 1/2" PEX fitting inlets Back to back installation feature Plaster guard included Temperature limit adjustment to prevent scalding Round spine Valve will perform at ASSE 1016 standards when flow rate is restricted to 2.0 GPM Codes/Standards UPC/cUPC listed ASME A112.18.1M/ A112.18.1 Meets requirements of ASSE 1016 Key Features & Innovations cUPC Listed Product Technologies / Benefits: Ceramic Disc Valve: A valve controls the flow of water. It responds to the turn of a handle from on to off and off to on. Danze Ceramic Disc Valves are built using two ceramic disc plates that have been smoothed to perfection. This smooth finish creates a water tight seal between the two plates as they slide to and from the on/off position. Danze Ceramic Disc Valves are maintenance free and stand the test of time.