Sensus 143-IRV-HP-3/4 Regulator

The Sensus 143-IRV-HP-3/4 is a robust domestic service gas pressure regulator designed for high-pressure residential and light commercial meter sets. This unit features a 3/4-inch NPT pipe size and is equipped with a 1/2-inch orifice, delivering high-capacity flow even as inlet pressures fluctuate. The integrated internal relief valve (IRV) provides critical overpressure protection, ensuring downstream safety in multi-dwelling installations or small industrial applications. Utilizing a 2-6 PSI outlet pressure range (indicated by the black spring), this regulator is ideal for systems requiring secondary stage regulation or high-pressure burner feeds. Its cast iron body and union nut connection allow for 360-degree rotation and flexible mounting positions without disturbing the pipework, a vital feature for veteran technicians working in cramped utility spaces. Engineered for durability with natural gas, LPG, and other non-corrosive vapors, this Sensus gas regulator ensures precise pressure control and reliable lock-up performance.

Key Benefits:

• Precise Pressure Management: The 1/2-inch aluminum orifice provides efficient flow control for high-demand equipment like unit heaters and boilers.
• Installation Flexibility: The union nut design allows the diaphragm case to be positioned in any of 8 orientations for easy vent piping.
• Overpressure Protection: Built-in IRV eliminates the need for external relief valves in most standard residential configurations.
• Industrial-Grade Construction: Features a rugged cast iron body and a nylon-reinforced Buna-N diaphragm for long-term service life.
• High Pressure Capability: Specifically tuned with a 2-6 lb spring for high-pressure delivery systems beyond standard ounce-range requirements.

Common Questions:

What is the maximum inlet pressure for this 143-HP model?
The Sensus 143-IRV-HP is typically rated for a maximum inlet pressure up to 125 PSIG, depending on the specific orifice size and safety protocols of the gas utility.

Can I use this regulator for propane service?
Yes, this regulator is fully compatible with LPG and propane, provided the orifice and spring settings match the specific BTU requirements of the installation.

Which way should the vent face for outdoor installs?
For outdoor applications, the regulator must be installed so the vent faces downward (typically the 6 o'clock position) to prevent water, ice, or debris from entering the diaphragm chamber.

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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.