Itron-Actaris B34SR-1 1/2-11/17 Regulator

The Itron-Actaris B34SR-1 1/2-11/17 Regulator is a high-performance, spring-loaded service regulator engineered for mid-range commercial and industrial applications, including gas engines, boilers, and furnaces. This unit features a robust 1.5-inch NPT connection and is equipped with a 5/8" x 3/4" orifice to manage high-flow requirements while maintaining gas pressure stabilization. Designed for precision, the internal silver spring provides a reliable outlet pressure range of 11" to 17" W.C., making it ideal for systems requiring higher delivery pressures than standard residential setups. Its internal relief valve (IRV) with a 1-inch vent ensures maximum safety by protecting downstream equipment from overpressure scenarios. Technicians will appreciate the adjustable loading ring, which provides a controlled boost at high flows to counteract "droop," ensuring consistent performance during quick on/off load cycles where shock problems typically occur. Built with a die-cast aluminum seal cap and a Buna-N molded diaphragm, this regulator is designed for durability in natural gas and propane vapor services.

Key Benefits

• Internal Relief Valve: Provides essential overpressure protection with a high-capacity 1" vent for HVAC system safety.
• Shock Mitigation: Rapid response characteristics make it perfect for commercial gas regulators facing sudden load changes.
• Precise Control: The 11-17" Water Column spring range allows for fine-tuned calibration in high-demand heating environments.
• Field Serviceable: Features an interchangeable brass orifice and field-swappable springs for rapid site adjustments.
• Reliable Construction: Utilizing 27 sq. in. of diaphragm area for superior sensitivity and stability across varying inlet pressures.

Common Questions

Can the B34SR be used for indoor installations?
Yes, provided it is properly vented to the outside atmosphere according to local codes. The 1" NPT vent should never be undersized to ensure the internal relief valve functions correctly.

What is the difference between the B34R and B34SR models?
The B34SR combines the high-capacity B34 valve assembly with the larger 8-inch diaphragm case (similar to the B31 series), offering an economical but powerful solution for mid-range industrial gas regulation.

How do I adjust the outlet pressure?
Remove the die-cast aluminum seal cap and turn the adjustment screw clockwise to increase the pressure or counter-clockwise to decrease it within the 11" to 17" W.C. range.

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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.