Flusso Faucets Serie 196 3/4" Single Output Thermostatic Shower Valve With Trim in Brushed NickelThe 196. 4102 Thermostatic valve features 3 4" NPT connections and has 1 water output. There are 2 settings or positions on the top handle of this product. They are as follows: Position 1 Output 1 Active Position 2 OFF No Water Flow The bottom handle sets the temperature. Supply Stops There are two safety stops at each water inlet to prevent water flow in case of installation and repairs. Handle Operation The bottom handle is used to control the