Maxitrol 325-7AL-1.25-12A49 Regulator

The Maxitrol 325-7AL-1.25-12A49 is a high-capacity line pressure gas regulator engineered for 2 PSI piping systems in residential, commercial, and industrial settings. This 1 1/4" NPT gas regulator utilizes a specialized lever-acting design to maintain precise control from full flow down to pilot stages, ensuring steady performance for high-demand appliances. With a maximum capacity of 1,250,000 BTU/hr, it is built to handle significant loads while providing a consistent 7-11" WC outlet pressure from a 2 PSI maximum inlet. The integrated positive dead-end lock-up is a critical safety feature for technicians, preventing downstream pressure spikes when appliances are not in operation. Additionally, the factory-installed 12A49 vent limiter eliminates the need for external vent piping in indoor installations when mounted in an upright, horizontal position. This CSA certified gas regulator is compatible with natural, manufactured, mixed, and liquefied petroleum gases, making it a versatile solution for modern gas distribution networks.

• High-Flow Efficiency: Supports up to 1,250,000 BTU/hr, making it ideal for large boilers or multiple appliance manifolds.
• Internal Safety: Features positive dead-end lock-up to protect downstream components during no-flow conditions.
• Simplified Installation: The 12A49 vent limiter reduces labor by removing the requirement for dedicated vent lines to the outdoors.
• Technical Compliance: Manifold and line pressure certified to ANSI Z21.80/CSA 6.22 standards for 2 PSI systems.
• Multi-Fuel Compatibility: Rugged aluminum construction suitable for Natural Gas and LP/Propane applications.

Can the Maxitrol 325-7AL be used in outdoor applications?
While the 325-7AL is primarily designed for indoor use with the included vent limiter, it can be installed outdoors if the vent limiter is removed and replaced with a certified outdoor vent protector (such as the 13A25) to prevent moisture and debris from entering the stack.

What is the purpose of the 12A49 vent limiting device?
The 12A49 is a certified vent limiter that restricts gas escapement to a safe level in the rare event of a diaphragm rupture. This allows the regulator to be installed indoors without a vent line, provided it is mounted in a horizontal, upright position.

Is this regulator suitable for 5 PSI systems?
This specific model is certified for 2 PSI max inlet pressure. For systems exceeding 2 PSI (up to 5 PSI), code typically requires an overpressure protection device (OPD) to be installed in conjunction with the regulator.

This item is not eligible for free shipping.

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.