Maxitrol 325-3L48-1/2 Regulator

The Maxitrol 325-3L48-1/2 is a professional-grade line pressure gas regulator engineered for high-performance piping systems. This 1/2" NPT lever-acting model is designed specifically for 2 PSI and 5 PSI piping systems, featuring a 5 PSI max inlet pressure rating. It delivers a precise 7-11"wc outlet pressure range, making it the industry standard for intermediate pressure control. With a 200,000 BTU/hr max capacity, it ensures stable flow for multi-appliance residential and commercial manifolds. This unit includes an integrated Overpressure Protection Device (OPD), meeting stringent CSA requirements for indoor line pressure regulators. Built for durability and responsive control, the 325-3L48-1/2 (fully interchangeable with the 325-3L48-44) maintains consistent delivery even during rapid valve cycling. For a clean installation, use an appropriately sized Maxitrol vent limiter (12A09) to eliminate the need for external vent piping where local codes permit. Rely on this gas pressure regulator for reliable HVAC gas piping applications including furnaces, boilers, and water heaters.

Key Benefits

• Precise Pressure Control: The lever-acting design ensures superior responsiveness and lock-up characteristics in 5 PSI gas systems.
• CSA Certified OPD: Integrated overpressure protection ensures system safety without requiring additional external components.
• High Flow Capacity: Rated for loads up to 200,000 BTU, supporting multiple downstream appliances simultaneously.
• Compact Footprint: Standard 1/2 inch NPT connections allow for streamlined installation in tight mechanical headers.
• Multi-Fuel Compatibility: Excellent performance in both Natural Gas and LP applications (with appropriate spring adjustments).

Common Questions

Can the Maxitrol 325-3L48-1/2 be installed indoors?
Yes, this is a certified line pressure regulator designed for indoor use. When using a vent limiter, it must be installed in a vertical, upright position to function correctly without external venting.

What is the difference between the 325-3L48-1/2 and the 325-3L48-44?
These two part numbers are technically identical. They share the same 1/2" NPT size, internal components, and performance specifications; the variation is typically found in distributor-specific labeling.

Is this regulator suitable for 2 PSI piping systems?
Absolutely. While it is rated for up to 5 PSI max inlet, it is the primary choice for stepping down 2 PSI gas pressure to standard appliance operating pressures.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.