Maxitrol 325-9-1 1/2 Regulator

The Maxitrol 325-9-1 1/2 Gas Regulator is a high-capacity, lever-acting design engineered for precise pressure control in residential, commercial, and industrial gas systems. This 1-1/2" NPT regulator handles a massive 2,250,000 BTU/hr maximum capacity, making it a reliable choice for large-scale appliance loads or serving as a line pressure regulator in 2 PSI piping systems. It features a robust aluminum housing and is CSA certified to deliver a stable outlet pressure between 4" and 12" w.c., even when faced with a 10 PSI maximum inlet pressure rating. The integrated positive dead-end lock-up ensures a secure shut-off when downstream demand ceases, protecting sensitive equipment from pressure spikes. Designed for versatility, this Maxitrol 325 series component supports multi-positional mounting and is compatible with natural, manufactured, mixed, and liquefied petroleum (LP) gases. For indoor installations, ensure compliance by pairing with a 12A49 vent limiter to eliminate the need for external vent piping.

• High Flow Performance: Supports up to 2.25 million BTU/hr, ideal for heavy-duty industrial boilers and multi-appliance manifolds.
• Dead-End Lock-Up: The lever-acting linkage provides a positive seal, preventing downstream over-pressurization during pilot-only or no-flow conditions.
• Multi-Fuel Compatibility: Verified for use with Natural Gas and Propane (LP) systems, providing flexibility across different job sites.
• Durable Construction: Lightweight yet rugged aluminum housing capable of operating in ambient temperatures from -40 to 205° F.
• Precision Regulation: Maintains consistent 4-12"wc outlet pressure regardless of fluctuations in the 1-1/2" NPT supply line.

Can the Maxitrol 325-9 be installed indoors?
Yes, provided it is equipped with a compatible vent limiting device like the 12A49. Without a vent limiter, it must be vented to the outdoors in accordance with local mechanical codes.

What is the difference between an appliance regulator and a line regulator in this series?
The 325-9 functions as both. When used as a line pressure regulator, it reduces 2 PSI house line pressure to appliance-level inches of water column. As an appliance regulator, it mounts directly to the unit's manifold.

Does this regulator require a specific mounting orientation?
While it supports various positions, if a vent limiter is installed, the regulator must be mounted horizontally with the vent limiter in the upright position to ensure proper ball check function.

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.