The Maxitrol 325-7A-1 1/2-12A49 1 1/2 Inch 5#Maxin 4-12 Inch Wc W/L Motor is a precision gas pressure regulator designed to improve the efficiency of HVAC systems. This device works by controlling the flow of gas into the heating equipment, ensuring constant pressure levels for safe and efficient operation. The Maxitrol 325-7A-1 is compatible with a wide range of HVAC appliances, incl... https://www.partshnc.com/325-7a-1-12-12a49-maxitrol-1-12-5maxin-4-12-wc-wlmtr