Maxitrol 325-9L-2-12A49 Regulator

The Maxitrol 325-9L-2-12A49 is a field-proven 2-inch NPT line pressure gas regulator designed for high-capacity residential and commercial 2 PSI piping systems. Engineered with a lever-acting design, this unit provides precise control from high flow demand down to pilot flow, delivering a 2,250,000 BTU/hr max capacity. The 12A49 vent limiter is factory-installed, making this regulator specifically suitable for indoor installations by eliminating the need for external vent piping. With a 7-11 inch wc outlet pressure range (white spring) and a 2 PSI max inlet pressure, it is ideal for systems utilizing natural gas or propane. The integrated positive dead-end lock-up ensures that downstream pressure is maintained at safe levels when the appliance gas valve is closed, protecting sensitive equipment from pressure spikes and ensuring stable burner performance.

• High gas flow capacity of 2.25M BTU/hr supports large boilers and industrial appliances.
• ANSI Z21.80/CSA 6.22 certified for integration into 2 PSI gas piping systems.
• Factory-installed 12A49 vent limiter allows for safe indoor mounting without separate vent lines.
• Lever-acting linkage delivers consistent regulation and reliable lock-up characteristics.
• Precision lock-up regulator design prevents downstream pressure equalization during static conditions.

Can the Maxitrol 325-9L-2-12A49 be used with LP gas?
Yes, this regulator is dual-fuel compatible. While it is rated for 2 PSI in typical 2 PSI piping systems for natural gas, it is equally effective for liquid petroleum (LP) applications within its specific pressure ratings.

What mounting orientation is required for this model?
When equipped with the 12A49 vent limiter, the Maxitrol 325-9L must be mounted in an upright horizontal position to ensure the ball-check vent limiting device functions correctly in the event of a diaphragm rupture.

Does this regulator require an external vent line?
Because this specific model includes the certified vent limiter, it does not require external venting to the outdoors under standard code requirements, provided the installation is in a well-ventilated area that meets local jurisdictional standards.

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.