Sensus 143-IRV-HP-1 Regulator

The Sensus 143-IRV-HP-1 is a heavy-duty industrial gas pressure regulator engineered for precise delivery in high-pressure applications. Built with a rugged cast iron body and a 1" NPT connection, this model utilizes a 1/2" aluminum orifice to handle significant flow volumes. The integrated internal relief valve (IRV) provides essential overpressure protection, making it a reliable choice for natural gas, LP gas, and other non-corrosive technical gases. Equipped with a black spring, this unit is calibrated for an outlet pressure range of 2 to 6 PSI, supporting maximum inlet pressures up to 125 PSI.

Designed for professional contractors, the 143-IRV-HP-1 features a union nut connection that allows for fast orifice inspection and maintenance without removing the valve body from the piping. Its Nylon fabric-reinforced Buna-N diaphragm and precision-molded valve seat ensure consistent lock-up and regulation performance across temperatures ranging from -20°F to 150°F. This regulator is frequently specified for industrial burners, large unit heaters, and commercial boiler sets where high-pressure gas regulation and safety are critical.

• Durable Construction: Features a cast iron valve body and die-cast aluminum spring case for long-term service in demanding environments.
• Enhanced Safety: The internal relief valve (IRV) helps protect downstream equipment from sudden pressure surges.
• Flexible Mounting: Serviceable in various orientations, providing flexibility in tight industrial mechanical rooms.
• Wide Compatibility: Optimized for natural gas service but also compatible with air, propane, and nitrogen.
• Corrosion Resistance: Cases are dip-primed with a chromate conversion coating and finished with a durable enamel topcoat.

What is the maximum inlet pressure for the 143-IRV-HP-1?
This specific high-pressure configuration handles up to 125 PSI maximum inlet pressure, provided the selected orifice size and spring combination align with flow requirements.

Can the spring be changed to adjust the outlet pressure?
Yes, the 143-80 series is modular. However, this model is shipped with the black spring specifically for 2-6 PSI applications. For other ranges, a different spring must be installed.

Is this regulator suitable for outdoor installation?
Yes, though it is recommended to install the regulator with the vent facing downward to prevent water or debris from interfering with the diaphragm operation.

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.