Maxitrol RV111-2 1/2 Regulator

The Maxitrol RV111-2 1/2 is a high-capacity, straight-thru-flow (STF) gas regulator engineered for precision in low-pressure manifold systems. Designed for 2.5-inch NPT connections, this appliance gas regulator utilizes a unique conical valve design that reduces frictional resistance, allowing gas to pass through without the directional changes common in standard poppet regulators. This RV111-2 1/2-CSA model is CSA certified for a maximum inlet pressure of 1/2 PSI, though it has been Maxitrol tested to handle up to 1 PSI. It features a factory-set 3-6" w.c. outlet pressure range, providing steady delivery for high-demand equipment like industrial boilers and large-scale furnaces. As a non-lockup type regulator, it is intended for main burner applications where downstream controls can handle line pressure. The aluminum housing is rated for ambient temperatures ranging from -40 to 205° F, ensuring reliable performance in demanding mechanical rooms. This unit is a direct replacement for the legacy RV110 series, offering improved sensitivity at low pressure differentials.

Key Benefits

• High Flow Capacity: The straight-thru-flow design allows for maximum BTU output with minimal pressure drop across the valve.
• Exceptional Accuracy: The conical valve principal provides sensitive regulation even at extremely low inlet pressures as low as 3" w.c.
• Versatile Fuel Compatibility: Fully suitable for use with natural gas, LP gas, manufactured, mixed, and liquefied petroleum gas-air mixtures.
• NPT Vent Bosses: All units are tapped for easy integration of vent lines or vent limiting devices in indoor installations.
• Durable Construction: Features a rugged aluminum body and Buna-N diaphragm for consistent performance in commercial and industrial settings.

Common Questions

Can the RV111-2 1/2 be used as a line pressure regulator?
No, this is a non-lockup appliance regulator. It should only be used where the downstream controls are rated to operate at the line pressure. It is not designed to provide a bubble-tight shut-off at zero flow.

What is the proper mounting orientation for this regulator?
To maintain accuracy and prevent debris buildup on the seat, the RV111 series must be mounted in an upright, horizontal position. Multi-positional mounting is not recommended for this specific high-capacity model.

How do I resolve pressure "hunting" or pulsation?
Pulsation usually indicates improper venting or turbulence. Ensure the vent line is sized correctly (increasing one pipe diameter for long runs) and that the regulator is installed away from elbows or tees that cause turbulent flow.

This item is not eligible for free shipping.

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.