Brushed Nickel Concealed 3-Way Thermostatic Valve Shower Mixer With Square Knobs Bring elegance into your bathroom with this easy to install single panel shower mixer. This brass thermostatic shower valve mixer by ALFI brand comes equipped with a 3-way shower diverter, so you can switch from your handheld showerhead or above showerhead, to tub filler or body jets any time you wish! Let the fun begin!