Flusso Faucets Serie 260 3/4" Three Output Thermostatic Shower Valve and Trim in Polished NickelThe 2780 Series of products from Isenberg uses the TVH. 2705F Thermostatic valve which features 3 4? NPT connections and has 3 water outputs [ports] which are operable one at a time without shared port operation. This product meets CAL Green compliance criteria. The bottom handle sets the temperature. The top handle controls water diversion between the 3 water output ports. Each port has full volume control capability. HORIZONTAL OR VERTICAL