Sensus 143-80-6-1 1/4 Regulator

The Sensus 143-80-6-1 1/4 Gas Regulator is a specialized service regulator engineered for precise natural gas pressure regulation in residential and light commercial meter sets. This Sensus Model 143-80 features a 5/16-inch orifice and a green spring, providing a calibrated outlet pressure range of 7.5" to 15" w.c.. Designed for high-capacity performance, it utilizes a 1-1/4 inch NPT pipe size connection to handle significant flow rates while maintaining tight lock-up characteristics. The internal relief valve (IRV) assembly ensures overpressure protection, reaching full capacity relief even if the main valve fails. As a field-proven Sensus gas division regulator, it is built with a rugged die-cast aluminum alloy body and a steel-reinforced diaphragm for maximum mechanical strength in demanding environments. This unit provides exceptional gas flow control for systems requiring stable downstream pressure despite fluctuating inlet pressures.

Key Benefits for Contractors

• Large Diaphragm Area: Provides high sensitivity to pressure changes for superior regulation at low flow rates.
• Internal Relief Mechanism: Integrated overpressure protection reduces the need for expensive secondary safety devices in most standard installations.
• Field Serviceability: The 360-degree union nut connection allows for easy diaphragm case orientation without breaking pipe connections.
• Corrosion Resistance: High-grade materials ensure the Sensus 143-80-6 maintains operational integrity in outdoor environmental exposures.
• Optimized Orifice Design: The 5/16 orifice balances high flow capacity with precise shut-off performance.

Common Questions

What is the maximum inlet pressure for the Sensus 143-80?
The 143-80 series is typically rated for up to 125 psi maximum inlet pressure, though specific orifice sizes and local codes may dictate lower operational limits for safety and performance.

Can the green spring be swapped for other pressure ranges?
Yes, the green spring (7.5" to 15" w.c.) can be field-replaced with other Sensus color-coded springs to adapt the gas regulator to different downstream requirements, provided the orifice size remains compatible.

Is this regulator suitable for LP/Propane service?
While commonly used for natural gas, the Sensus 143-80-6-1 1/4 is compatible with propane systems when sized correctly for the specific gravity and BTU load of the application.

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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.