Maxitrol 325-3-1/2-YELLOW Regulator

The Maxitrol 325-3-1/2-YELLOW is a high-performance 1/2" NPT gas pressure regulator engineered for pounds-to-inches reduction in residential, commercial, and industrial applications. This lever-acting design excels in precision, providing consistent positive dead-end lock-up to protect downstream equipment. With a 10 PSI maximum inlet pressure and a specific 15-30" wc outlet pressure range, it is ideal for high-pressure burner manifolds and specialized appliance setups. The yellow spring configuration ensures stable regulation even at low pilot flows, supporting a 150,000 BTU/hr maximum total load. Built with a durable aluminum housing and nitrile rubber valve, this Maxitrol 325 series regulator is compatible with natural, manufactured, mixed, and LP gases. Whether used as a line pressure regulator or a dedicated appliance regulator, its multi-poise mounting capability offers flexibility for tight mechanical room configurations.

• Precise Pressure Control: High-leverage linkage maintains accurate setpoints from full flow down to pilot demand.
• Superior Lock-Up: Ensures dead-end lock-up to prevent pressure equalization and protect sensitive appliance valves.
• Rugged Construction: Features a corrosion-resistant aluminum body and high-quality synthetic rubber diaphragms for long-term field reliability.
• High Capacity: Manages up to 100,000 BTU/hr individual loads, making it suitable for high-output boilers and water heaters.
• Versatile Media: Certified for use with natural gas, LP gas, and air mixtures.

Is a vent limiter included with this yellow spring model?
Standard 325-3 models often require a separate 12A09 vent limiting device for indoor use to meet code without piping a vent line. Always verify local jurisdiction requirements for high-pressure gas regulator installation.

What is the purpose of the yellow spring?
The yellow spring is specifically calibrated for an outlet pressure range of 15 to 30 inches water column, which is necessary for equipment requiring higher manifold pressures than standard 7-11" wc settings.

Can this be mounted in any orientation?
While the 325-3-1/2-YELLOW supports multi-poise mounting, it must be installed in a horizontal upright position if a vent limiting device is utilized to ensure the ball check functions correctly.

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.