Maxitrol 325-3L-1/2 Regulator

1/2" NPT, 2 PSI Max Inlet Pressure, 7-11"wc Outlet Pressure, 140,000 btu/hr Max Individual Load, 250,000 btu/hr Max Multiple Load, Lever Acting Design, Certified Line Pressure Gas Regulator with Positive Dead-End Lock-Up

Maxitrol 325-3L-1/2 Gas Regulator – 1/2" NPT, 2 PSI Inlet, 250,000 BTU Capacity, Lever Acting, Certified Line Pressure Regulator

The Maxitrol 325-3L-1/2 Gas Regulator is a high-performance, certified line pressure gas regulator designed for residential and commercial gas systems. Engineered with a lever-acting design for precise regulation, this model is ideal for both individual and multiple appliance installations requiring accurate gas flow control and positive dead-end lock-up.

With a 1/2" NPT connection, the regulator supports a maximum inlet pressure of 2 PSI, and delivers an outlet pressure range of 7-11" W.C. It can handle up to 140,000 BTU/hr for individual loads and 250,000 BTU/hr for multiple loads, making it suitable for a wide variety of gas-fired appliances including furnaces, water heaters, boilers, and space heaters.

Key Features:

• Connection Size: 1/2" NPT

• Max Inlet Pressure: 2 PSI

• Outlet Pressure Range: 7–11" W.C.

• BTU Capacity:

  • 140,000 BTU/hr (individual load)

  • 250,000 BTU/hr (multiple load)

• Design: Lever-acting for smooth, reliable operation

• Type: Certified Line Pressure Gas Regulator

• Lock-Up: Positive dead-end lock-up ensures safe operation

• Vent Limiter: Not included

• Application: Natural gas and propane systems

• Brand: Maxitrol

• Model: 325-3L-1/2

Product Overview:

The Maxitrol 325-3L-1/2 regulator is part of the trusted 325 Series, known for reliability, versatility, and performance in low-pressure gas regulation. It is perfect for installations that require safe and consistent downstream pressure, and it’s compatible with both natural gas and propane applications.

Thanks to its positive dead-end lock-up feature, the regulator safely stops gas flow when demand ceases—preventing over-pressurization and ensuring peace of mind. Its lever-acting mechanism delivers stable and responsive regulation under varying load conditions, helping maintain optimal appliance performance.

Ideal Applications:

• Residential and commercial HVAC systems

• Water heaters, furnaces, boilers

• Fireplaces, unit heaters, and more

• Indoor or outdoor gas appliances (when properly installed)

Why Choose the Maxitrol 325-3L-1/2?

• ✅ High capacity gas regulation (up to 250,000 BTU/hr)

• ✅ Safe and certified with positive dead-end lock-up

• ✅ Durable lever-acting design ensures long-lasting performance

• ✅ Easy integration with standard 1/2" NPT pipe fittings

• ✅ Ideal for multi-appliance or individual load configurations

Specifications:

• Model: 325-3L-1/2

• Connection: 1/2" NPT

• Inlet Pressure: Max 2 PSI

• Outlet Pressure: 7" to 11" W.C.

• BTU Rating: 140K (individual), 250K (multiple)

• Design: Lever-acting

• Vent Limiter: Not included

• Lock-Up: Positive Dead-End

• Approvals: Certified for line pressure gas regulation

• Brand: Maxitrol

Ensure safety and reliability in your gas system with the Maxitrol 325-3L-1/2 Gas Regulator — a trusted choice for consistent gas pressure regulation. Perfect for both residential and commercial use, this durable regulator helps optimize gas appliance efficiency while delivering worry-free performance.