LaToscana Valve For All 711 Trim PiecesBehind the wall is the heart of your shower and tub system. Paini have their own brass valve bodies cast. The basic valve controls the on off and hot cold mix of the water flow. Thermostatic Valves also protect you from sudden temperature changes with an added feature. Instead of having to always search for the right temperature, thermostatic valves let you find your perfect temperature and then remember that setting. Just turn on the water and you