Maxitrol Gas Regulator 1/2 Inch 325-3L Low-Pressure NG Control for HVAC Systems MGE-3253L44NG01

The Maxitrol Gas Regulator 1/2 Inch 325-3L Low-Pressure NG Control for HVAC Systems (MGE-3253L44NG01) is an OEM-grade line pressure regulator designed for residential natural gas appliances requiring stable low-pressure delivery. Built with a 1/2 inch NPT inlet and outlet, the 325-3L series provides precise pressure control in typical furnace, boiler or unit-heater applications. The regulator features an adjustable outlet range commonly set between 3.5 and 5.0 inches WC depending on appliance requirements, an internal relief mechanism, a corrosion-resistant housing, and a durable diaphragm assembly for long service life. Technicians benefit from its compact construction, top-mounted adjustment screw, and directional flow marking that simplifies installation. During setup technicians mount the regulator in line with the gas piping, verify correct flow direction, adjust the outlet pressure to the appliance rating, perform leak testing, and confirm proper burner ignition and flame stability. Designed for consistent, safe gas delivery, the MGE-3253L44NG01 gives technicians a reliable, field-ready solution for maintaining accurate natural-gas regulation in HVAC systems.