Maxitrol 325-3L47-1/2 Regulator

The Maxitrol 325-3L47-1/2 is a professional-grade line pressure gas regulator engineered for 2 PSI and 5 PSI piping systems. Built with a lever-acting design, this 1/2" NPT regulator ensures precise fuel flow control from full capacity down to pilot-level demands. It is specifically designed for systems utilizing CSST, semi-rigid copper, or black iron pipe, providing a dead-end lockup characteristic essential for safety in modern residential and commercial gas distributions. The integrated Over-Pressure Protection Device (OPD) is factory-assembled and certified to limit downstream pressure to safe levels in the event of a primary regulator failure, ensuring compliance with ANSI Z21.80/CSA 6.22 standards. This 125,000 BTU/hr capacity unit features a durable die-cast aluminum body, making it a staple for technicians installing high-efficiency furnaces, water heaters, and boilers. Its ability to serve as a pounds-to-inches regulator allows for the seamless reduction of inlet pressures up to 5 PSI down to an adjustable outlet range of 7-11" w.c.

• Dead-End Lockup: The high-leverage valve linkage ensures absolute shut-off, preventing pressure creep during periods of zero gas demand.
• Multi-Positional Mounting: Certified for versatile installation across various orientations, provided any optional vent limiters remain upright.
• Optimized Compatibility: Suitable for natural gas, LP gas, and air mixtures, offering a flexible solution for diverse job site requirements.
• Integrated Safety: The certified OPD provides required downstream protection for systems exceeding 2 PSI, eliminating the need for separate safety components.

Can the Maxitrol 325-3L47-1/2 be used for propane systems?
Yes, this regulator is certified for use with LP gas. When used in LP applications, ensure the inlet pressure does not exceed the 2 PSI certification limit typical for liquid petroleum vapor distribution.

Is a vent line required for indoor installation?
If installed with a certified vent limiter (such as the 12A09), the requirement to run a vent line to the outdoors is typically eliminated. Without a limiter, the regulator must be vented to the outside per local mechanical codes.

What is the maximum individual load for this regulator?
The 325-3L47-1/2 is rated for a maximum individual appliance load of 125,000 BTU/hr. For applications with multiple appliances, the combined load should be verified against the manufacturer's flow tables at your specific inlet pressure.

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.