Maxitrol 325-9L-2 Regulator

The Maxitrol 325-9L-2 Regulator is a high-capacity, 2-inch NPT line pressure gas regulator engineered specifically for 2 PSI piping systems. As a veteran-grade gas pressure regulator, it utilizes a lever-acting design to provide precise control across the entire flow spectrum, from full burner demand down to pilot flow applications. This model is ideal for commercial and industrial setups requiring a high-capacity gas regulator capable of handling up to 2,250,000 BTU/hr. Its primary function is to step down 2 PSIG inlet pressure to a manageable 7-11" w.c. outlet range, ensuring stable delivery for natural gas and propane (LP) equipment. Certified to ANSI Z21.80/CSA 6.22 standards, it features a positive dead-end lockup to prevent downstream pressure spikes during periods of zero demand, a critical requirement for modern multi-appliance manifolds and line pressure regulation.

Key Benefits

• Precise Delivery: The lever-acting design ensures stable outlet pressure even during rapid changes in gas demand.
• Robust Capacity: Rated for up to 2,250,000 BTU/hr, making it suitable for large boilers, rooftop units, and industrial furnaces.
• Dead-End Lockup: Provides positive dead-end lockup to protect downstream appliance valves from over-pressurization.
• Multi-Positional Mounting: Aluminum housing allows for flexible installation, though upright mounting is required if a vent limiter is utilized.
• Broad Compatibility: Certified for use with natural gas, LP gas, and mixed gas systems.

Common Questions

Does this regulator require an external vent line?
If installed indoors, a vent line to the atmosphere is typically required unless a certified vent limiting device (such as the 12A49) is installed. Always check local mechanical codes for Maxitrol 325-9L sizing and venting compliance.

What is the difference between an appliance regulator and this line regulator?
The Maxitrol 325-9L-2 is a certified line pressure regulator designed to handle 2 PSI systems. Standard appliance regulators are often limited to 1/2 PSI. Using an appliance regulator in a 2 PSI line without an overpressure protection device violates ANSI Z21.80 standards.

Can I use this for outdoor propane tanks?
Yes, it is compatible with LP gas; however, for outdoor gas regulator installation, a vent protector (like the 13A25) should be used to prevent water and debris from entering the vent port.

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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.