Maxitrol 325-3L-1/2-12A09 Regulator

The Maxitrol 325-3L-1/2-12A09 is a high-performance certified line pressure gas regulator engineered for 2 PSI piping systems. This 1/2" NPT lever-acting design regulator is specifically built for high-efficiency gas applications, providing positive dead-end lock-up to maintain downstream integrity during zero-flow conditions. With a 2 PSI max inlet pressure and an adjustable 7-11" WC outlet pressure range, it effectively manages individual loads up to 140,000 BTU/hr and multiple loads up to 250,000 BTU/hr. The inclusion of a 12A09 vlimiter (vent limiter) eliminates the need for vent piping to the outdoors in most indoor installations, simplifying setup for commercial gas pressure regulation. This Maxitrol 325 series component ensures stable pressure for furnaces, boilers, and water heaters, meeting rigorous safety standards for residential and light commercial gas manifolds.

Key Benefits for Technicians:

• Precision Pressure Control: Maintains a steady 7-11" water column outlet even with fluctuating 2 PSI inlet pressures.
• Simplified Installation: The integrated vent limiter reduces labor by removing external venting requirements where local codes allow.
• Reliable Lock-Up: Features a positive dead-end lock-up mechanism to prevent over-pressurization of downstream equipment.
• High Capacity Versatility: Capable of handling multiple appliance loads totaling 250,000 BTU/hr from a single regulator.
• Durable Construction: Built with rugged materials to withstand the demands of professional HVAC and plumbing environments.

Common Questions regarding the Maxitrol 325-3L:

What does the 12A09 vent limiter do?
The 12A09 vent limiter is a safety device that permits the regulator to be installed without a vent line to the outdoors. In the event of a diaphragm rupture, it limits the escape of gas to within ANSI standards.

Can I use this for Propane (LP) or Natural Gas?
Yes, the Maxitrol 325-3L is suitable for use with natural, manufactured, mixed, liquefied petroleum gases, and LP gas-air mixtures.

Is this regulator suitable for outdoor installation?
While the 325 series is often used indoors with the vent limiter, it can be installed outdoors if protected from the elements and if a vent protector is used instead of a limiter.

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.