The legendary Temptrol pressure-balancing, anti-scald mixing valve is the heart of every Symmons tub and shower system and it is the benchmark by which all others are judged. 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. Now Temptrol is even easier to install with the Rapid Install bracket system for virtually any rough-in situation and factory-installed options for various water supply connection methods.