Flusso Faucets Serie 260 3/4" Two Output Thermostatic Shower Valve and Trim in Matte BlackThe 2740 series of products from Isenberg uses the TVH. 2717F Thermostatic valve which features 3 4? NPT connections and has 2 water outputs [ports] which are operable one at a time without shared port operation. This product meets CAL Green compliance criteria. The right handle sets the temperature. The left handle controls water diversion between the 2 water output ports. Each port has full volume control capability. HORIZONTAL OR VERTICAL