Maxitrol 325-7AL-1.5-12A49 Regulator

The Maxitrol 325-7AL-1.5-12A49 is a high-performance 1 1/2" NPT line pressure regulator designed specifically for piping systems providing 2 PSI or 5 PSI natural gas service. Engineered with a lever-acting design, this regulator excel in high-capacity applications up to 1,250,000 BTU/hr, providing critical stability for high-output appliances. It features a precise 7-11" WC outlet pressure range (factory set at 8" WC) and includes a factory-installed 12A49 vent limiter, eliminating the need for vent piping to the outdoors per ANSI Z21.80/CSA 6.22 standards. The integrated positive dead-end lock-up capability ensures zero pressure creep during downstream equipment shutdown, protecting sensitive components. Known as an exact replacement for model 325-7AL-1212-NG01, it is the industry standard for gas pressure regulation in commercial multi-family and light industrial installations requiring reliable pounds-to-inches reduction.

Key Technical Benefits

• High Capacity Flow: Supports up to 1.25 million BTU/hr, making it ideal for central boiler plants and high-demand commercial kitchens.
• Integrated Vent Limiting: The 12A49 orifice allows for indoor installation without the labor and material costs of external vent piping.
• Dead-End Lock-Up: Provides a tight seal when downstream flow stops, preventing high-pressure spikes from reaching the appliance valve.
• Multi-Positional Mounting: Can be installed horizontally or vertically, facilitating easier mechanical room pipe fitting in tight spaces.
• Certified Reliability: Meets rigorous standards for NG system gas piping safety and performance.

Common Questions

What is the maximum inlet pressure for the 325-7AL-1.5-12A49?
This regulator is rated for a maximum emergency exposure of 2 PSI, though it is commonly used in systems where the standard operating pressure is regulated down from higher utility supply levels.

Can this regulator be used for Propane (LP) applications?
While the 325 series is compatible with LP, this specific model (1212-NG01) is configured for natural gas service. Field conversion requires the appropriate spring kit for the desired pressure range.

What is the purpose of the 12A49 vent limiter?
The vent limiter acts as a safety device that restricts gas escape in the event of a diaphragm rupture, meeting indoor CSA certified regulator requirements without external venting.

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.