Maxitrol 325-5BL-3/4 Regulator

The Maxitrol 325-5BL-3/4 is a certified 2 PSI line pressure regulator engineered for high-performance natural gas and propane piping systems. Designed for residential, commercial, and industrial service, this 3/4" NPT regulator utilizes a lever-acting design to provide positive dead-end lock-up, ensuring stable downstream pressure even under no-flow conditions. This model features a wide 7-11" w.c. outlet pressure range (factory set at 8" w.c.) and is capable of managing a maximum individual load of 425,000 BTU/hr or a total combined load of 600,000 BTU/hr. Integrated Imblue Technology provides superior corrosion resistance, making it an ideal selection for outdoor installations or harsh environments where standard aluminum housings may fail. This regulator is CSA certified to ANSI Z21.80/CSA 6.22 standards, offering precise control from full flow down to pilot flow for critical HVACR applications.

• Imblue Technology: Advanced coating provides enhanced protection against atmospheric corrosion and the elements in outdoor applications.
• High Flow Capacity: Handles 600,000 BTU/hr max multiple load, making it suitable for high-demand boiler and furnace headers.
• Dead-End Lock-Up: The lever-acting design prevents pressure creep during periods of zero demand, protecting sensitive downstream components.
• Versatile Media Compatibility: Certified for use with natural, manufactured, mixed, and liquefied petroleum (LP) gases or LP gas-air mixtures.
• High Ambient Tolerance: Rated for operation in extreme temperatures ranging from -40°F to 205°F.

Is a vent limiter included with the 325-5BL-3/4?
This specific model is the "BL" series. While it features a 3/8" NPT vent connection, a vent limiter or outdoor vent protector must be sourced separately if required by local codes or for outdoor mounting to prevent debris ingress.

What is the maximum inlet pressure for this regulator?
As a line pressure regulator, it is CSA certified for a maximum 2 PSI inlet pressure. For systems exceeding 2 PSI, a factory-approved overpressure protection device (OPD) is mandatory to meet ANSI Z21.80 standards.

Can I use this regulator for LP gas applications?
Yes, the Maxitrol 325-5BL-3/4 is compatible with LP gas. The internal white spring allows for adjustment up to 11" w.c., which is the standard manifold pressure for most propane-fired equipment.

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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.