Maxitrol 325-7AL-1 1/4 Regulator

The Maxitrol 325-7AL-1 1/4 is a professional-grade line pressure gas regulator engineered for high-demand residential, commercial, and industrial piping systems. Featuring a lever acting design and a 1,250,000 BTU/hr maximum capacity, this unit excels in 2 PSI systems, reducing supply pressure to a precise 7-11" w.c. range. Its 1 1/4" NPT threaded connections ensure high flow rates for natural gas or propane applications while maintaining a positive dead-end lock-up to prevent downstream over-pressurization during no-flow conditions. Built with a rugged aluminum housing and a high-leverage linkage assembly, it provides stable control from full load down to pilot flow. This ANSI Z21.80/CSA 6.22 certified regulator is the standard for contractors requiring reliable gas pressure regulation in multi-appliance manifolds or large-scale boiler feeds where precision and durability are non-negotiable.

Key Benefits

• High Capacity Performance: Handles up to 1,250,000 BTU/hr, making it ideal for large boilers and commercial water heaters.
• Dead-End Lock-Up: The lever acting design ensures tight shut-off, protecting sensitive downstream components.
• Multi-Fuel Compatibility: Certified for use with natural gas, LP gas, and air mixtures.
• Multi-Poise Mounting: Suitable for various installation angles, though upright mounting is required if using a vent limiting device.
• Precise 2 PSI Control: Specifically optimized for 2 PSI piping systems to maintain steady 7-11" w.c. outlet pressure.

Common Questions

Can the Maxitrol 325-7AL be installed outdoors?
Yes, but it requires an approved vent protector (such as the Maxitrol 13A25) to prevent moisture and debris from entering the vent port. For extreme environments, Imblue Technology versions should be considered.

What is the purpose of the white spring in this model?
The pre-installed white spring is calibrated for the 7" to 11" w.c. outlet pressure range. Modifying the spring in the field will void its ANSI Z21.80 certification for line pressure regulation.

Is a vent limiter included with the 325-7AL-1 1/4?
Standard models are not typically shipped with a vent limiter. If local codes require indoor venting without a dedicated line to the outside, a 12A49 vent limiting device must be purchased and installed separately.

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.