Sensus 243-8-HP-1 1/4 Regulator

The Sensus 243-8-HP-1 1/4 Regulator is a heavy-duty, large-capacity gas pressure regulator engineered for demanding commercial and industrial applications. This high-pressure model features a 1.25-inch NPT pipe size and a 3/4-inch orifice, making it a staple for technicians servicing industrial meter sets, boilers, and large-scale furnaces. Built with a rugged cast iron body and a die-cast aluminum diaphragm case, this natural gas regulator is designed to handle an inlet pressure up to 40 PSIG while maintaining precise downstream control. The included cadmium spring provides a reliable outlet pressure range of 3 to 6.5 PSIG, ensuring stable fuel delivery for high-demand equipment. Known for its field versatility, the Sensus 243-8-HP utilizes a union connection that allows for the diaphragm case to be rotated or the body to be serviced without fully disconnecting the pipe train, a critical feature for minimizing downtime in critical gas distribution systems.

• High-Flow Capacity: The 3/4-inch orifice facilitates significant flow rates required for commercial burners and complex HVACR setups.
• Field Serviceability: Features fully interchangeable bodies and diaphragm-case assemblies for simplified inspections and maintenance in tight piping arrangements.
• Multi-Gas Compatibility: While optimized for natural gas, this regulator performs reliably with LPG vapor, air, nitrogen, and dry CO2.
• Precise Regulation: The 8-inch diaphragm provides exceptional sensitivity to pressure changes, reducing droop and maintaining accurate fixed-factor billing setpoints.
• Robust Construction: Combines an ASTM A126 Class B cast iron body with high-strength internal components for long-term reliability in industrial gas service.

What is the maximum inlet pressure for the 243-8-HP configuration?
With the 3/4-inch orifice installed, the 243-8-HP typically supports a maximum inlet pressure of 40 PSIG. Always consult the specific Sensus capacity tables for your required differential to ensure safe operation.

Does this model include an internal relief valve (IRV)?
No, the 243-8-HP high-pressure variant is a non-IRV model. It is designed for applications where external overpressure protection or an external downstream control line is utilized, such as in monitor set configurations.

Can the regulator be installed in a vertical orientation?
Yes, the Sensus 243 series can be mounted in any position—horizontal, vertical, or diagonal—provided the flow direction matches the arrow on the body and the vent is protected from debris and moisture.

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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.