For more than 50 years, the Symmons Temptrol Pressure-Balancing Tub and Shower Valve has been the safe and reliable choice for pressure-balanced shower valves. The legendary Temptrol pressure-balancing, anti-scald mixing valve is the heart of every Symmons shower system. Each valve is constructed of solid brass, bronze, and stainless steel, and features an adjustable piston that instantly and continually balances the hot and cold water pressure as demand fluctuates in the plumbing system. An adjustable stop screw limits the maximum hot water temperature. The Temptrol features a one-piece cast brass body that is designed to accommodate back-to-back and thin-wall installations. Each valve is shipped with ½-inch NPT threaded and direct sweat connection inlets/outlets for easy installation, and factory-installed options are available for CPVC, PEX, and ProPress® connections. Not only is the Temptrol valve easy to install, but it is also simple to maintain and adjust when needed. A quick turn of the EasyService™ Stops isolates the valve completely, without the hassle of shutting down the entire water supply to your house or building. All Symmons valves are backed with a lifetime limited warranty for consumers and a ten year warranty for commercial use, so if you have an issue, just let us know and we"™ll make it right.Pressure-balancing, anti-scald design prevents temperature fluctuationSymmons EasyService™ Stops isolate the water supply to your shower without shutting down the entire systemLimited lifetime warranty for consumers; 10 year warranty for commercial useValve constructed of brass, bronze, and stainless steel for long-lasting durabilityShipped with ½-inch universal NPT and direct sweat connection inlets/outletsOptional factory-installed adapters for CPVC, PEX, or ProPress® enable fast, flame-free installationOptional Rapid Install™ Bracket available for fast and easy installationAdjustable stop screw to limit handle turnMade right, in the USA