American Standard Pressure Balance Unit for Single-Control Tub/Shower Valve

Lessen your chance of experiencing a dramatic change in water temperature with the Pressure Balance Unit. It's built to maintain a constant output temperature in response to changes in hot and cold supply pressure. If you have a hard water environment it is ideal for that too as it is resistant to mineral deposits. The diaphragm system with integrated check valves is engineered to eliminate cross flow.|Protects against scalding|For use on R110, R120, R115, R125 rough in valves|Reliable performance|Quality construction|Limited 1-year warranty|Plastic material