Sensus 243-12-2 Regulator

The Sensus 243-12-2 is a heavy-duty 2" NPT commercial gas regulator engineered for high-capacity service in industrial and district regulation environments. This model is configured with a 1"-30° orifice and a green spring, establishing an outlet pressure range of 6-14" WC. With a maximum inlet pressure rating of 25 PSIG, it provides precise positive dead-end lockup for critical applications including boilers, furnaces, and large-scale atmospheric burners. The integrated Internal Relief Valve (IRV) enhances system safety by venting overpressure conditions, while the cast iron body ensures structural integrity in high-demand mechanical rooms. The 4-bolt union connection allows for 360-degree diaphragm rotation, streamlining natural gas and LP propane piping in tight configurations.

• High-Flow Precision: Optimized for large capacity commercial loads with accurate pressure control across varying inlet conditions.
• Serviceable Design: Features a union-style connection for rapid valve inspection and diaphragm replacement without removing the body from the line.
• Enhanced Safety: Built-in Internal Relief Valve (IRV) provides localized overpressurization protection.
• Versatile Media Compatibility: Rated for use with natural gas, propane vapor, air, nitrogen, and other inert gases.
• Industrial Durability: Rugged ASTM A126 Class B cast iron construction for long-term reliability in utility and industrial settings.

What is the difference between the 243-12-2 and the 243-12-1-2?
These part numbers are technically identical, denoting the 2" NPT model equipped with an internal relief valve (IRV) and standard diaphragm assembly.

Can I change the outlet pressure range in the field?
Yes, the green spring (6-14" WC) can be swapped with other Sensus 243-12 color-coded springs to reach different pressure setpoints, provided the orifice is sized correctly for the load.

Does this regulator require an external control line?
No, the 243-12-2 uses internal sensing. For applications specifically requiring downstream remote sensing, an external control line version would be necessary.

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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.