Johnson Controls V47AA-1C Temperature Actuated Modulating Valve, 115/180 F. 4 6 F Cap 6 Ft. Arm., Bulb Dim. 11/16 X 3-1/4",

Johnson Controls V47AA-1C Temperature Actuated Modulating Valve, 115/180 F. 4 6 F Cap 6 Ft. Arm., Bulb Dim. 11/16 X 3-1/4",. Johnson Controls (PENN) V47 series temperature actuated, modulating water valves help to regulate water flow to maintain desired temperature. They are designed for heat exchangers to maintain optimal operating temps of internal combustion engines, air compressors, etc.