The Maxitrol 325-7AL-1 1¼″ Gas Pressure Regulator is a precision control device that maintains consistent 2 PSI gas pressure for safe, efficient combustion in HVAC systems. It automatically adjusts fuel flow to match demand, ensuring stable burner performance and protecting downstream components. Designed for use in residential and commercial furnaces, boilers, and water heaters, it e... https://www.partshnc.com/325-7al-1-14-maxitrol-125-2linerefcertified7-11-wc