Symmons Temptrol Tub / Shower valves are the most widely used commercial shower valves in history. For over 60 years Symmons Temptrol valves have provided reliable service in common everyday commercial environments. For instance, you will find Symmons Temptrol valves in hotels ranging from The Four Seasons to a Super 8. Symmons stands for quality when it comes to showers. With solid brass cartridges, removeable seats and replaceable washers, Symmons Temptrol Tub and Shower Valves are the highest quality you can get.