Maxitrol 325-5L48-3/4-LIM Regulator

The Maxitrol 325-5L48-3/4-LIM is a high-performance line pressure gas regulator engineered for precision in residential and commercial piping systems. This 3/4" NPT gas regulator is specifically designed for high-capacity applications, delivering up to 320,000 BTU/hr while maintaining a steady 7-11" WC outlet pressure. Built with a lever-acting design and an integrated Overpressure Protection Device (OPD), it ensures reliable downstream safety. The Maxitrol 325-5L48-3/4-LIM supports a maximum inlet pressure of 5 PSI for natural gas and 2 PSI for LP gas. As a certified gas regulator with vent limiter, it eliminates the need for vent piping to the outdoors when local codes permit, simplifying installation in tight mechanical rooms. Its positive dead-end lock-up capability prevents pressure creep during appliance off-cycles, protecting sensitive gas valves in furnaces, boilers, and high-recovery water heaters.

Key Technical Benefits:

• CSA Certified safety: Complies with ANSI Z21.80/CSA 6.22 standards for 2 PSI and 5 PSI piping systems.
• Reduces installation time: The 12A09 vent limiter removes the requirement for specialized vent lines to the exterior.
• Superior lock-up performance: Features a high-quality rubber seal for absolute shut-off, maintaining system safety at zero flow.
• Multi-fuel compatibility: Suitable for natural gas and propane (LP) applications with appropriate inlet pressure management.
• HVAC contractor grade: Durable aluminum construction provides long-term service life in demanding mechanical environments.

Frequently Asked Questions:

Can the Maxitrol 325-5L48-3/4-LIM be installed indoors without a vent line?
Yes, when equipped with the factory-installed vent limiter, this regulator is designed for indoor use without external venting, provided it is installed in a horizontal position and meets local HVAC codes.

What is the purpose of the Overpressure Protection Device (OPD)?
The OPD is a safety mechanism that protects downstream components from damage in the event of a regulator failure, ensuring the outlet pressure does not exceed safe operating limits for the appliance.

Is this regulator suitable for both high-pressure and low-pressure gas lines?
It is specifically rated for line pressure regulation, making it the standard choice for transitioning from a 2 PSI or 5 PSI house line down to appliance-level inches of water column.

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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.