AO Smith V110D1008 V110D Radiator Valve, Straight Pattern, 3/4 Inch, Threaded, 150 psi Hot Water, 15 psi Steam, 5.8 Cv, 162000 BtuH Heating, T104 Thermostatic Actuator, Nickel Plated Bronze, 4-1/8 Inch L ? Designed with the higher capacity normally required by north American heating systems ? Valve seat disc, which is