Sensus 496-20-3/4 Regulator

The Sensus 496-20-3/4 Gas Regulator is a veteran-grade solution for high-precision gas pressure management in residential and light commercial gas systems. This domestic service regulator features a robust cast iron body with 3/4 inch NPT inlet/outlet ports and a 1/4 inch aluminum orifice, optimized for a maximum inlet pressure of 60 PSIG. Equipped with a green loading spring, it provides a stable 6-14 inch Water Column (WC) outlet delivery range, making it a drop-in replacement for standard heating applications and furnace manifolds.

Engineered with a 4-inch roll-out diaphragm, the 496-20 offers flow capacities that typically require larger, more cumbersome 6-inch diaphragm units. The integrated internal relief valve (IRV) is standard, calibrated to relieve at approximately 7-10 inches WC above the set point safely through its 1 inch NPT screened vent. Whether you are piping natural gas, propane (LPG), or air, this direct-acting lever-type regulator ensures positive dead-end lockup and consistent downstream pressure for boilers, unit heaters, and industrial burners.

Key Benefits for the Contractor:

• Maximum Flow Efficiency: The 4-inch roll-out diaphragm design provides superior sensitivity and capacity in a compact form factor.
• Internal Relief Protection: Built-in IRV eliminates the need for external secondary overpressure protection in many standard jurisdictions.
• Field Versatility: Suitable for multi-position mounting, including 496-20 straight body configurations, to fit tight mechanical room spaces.
• Corrosion Resistance: Die-cast aluminum spring cases and chromate-converted internal components withstand outdoor installations and demanding environments.
• Broad Media Compatibility: Reliable performance with natural gas, propane, air, CO2, and other non-corrosive technical gases.

Common Technical Questions:

What is the maximum inlet pressure for a 1/4 inch orifice?
With the standard 1/4 inch orifice installed, this regulator is rated for a maximum inlet pressure of 60 PSIG. Exceeding this may impact the lockup performance and safety limits of the relief valve.

Can this regulator be used for outdoor meter sets?
Yes, the 496 series is designed for both indoor and outdoor gas service. For outdoor use, ensure the vent is pointed downward or protected from moisture and debris using the 1 inch NPT connection.

How do I adjust the outlet pressure?
Remove the closing cap and turn the green spring adjustment screw. Clockwise rotation increases the outlet pressure within the 6-14 inch WC threshold, while counter-clockwise decreases it.

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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.