Sensus 496-20-1/2 Regulator

The Sensus 496-20-1/2 is a robust domestic service regulator designed for high-performance pressure control in residential, light commercial, and industrial gas sets. This straight body gas regulator features a 1/2" NPT connection and is factory-equipped with a 1/4" orifice, supporting a maximum inlet pressure of 60 PSIG. Utilizing a green spring, this model provides a precise outlet pressure range of 6 to 14 inches water column (w.c.), making it an ideal choice for natural gas, LPG, and other non-corrosive lean gases. For added safety and system protection, the unit includes an internal relief valve (IRV) as a standard feature, engineered to relieve at approximately 7-10” w.c. above the set point. The 4-inch roll-out diaphragm delivers the high-capacity throughput typically reserved for larger 6-inch diaphragm regulators, ensuring stable gas pressure regulation even during rapid load changes in furnaces, boilers, and unit heaters.

• Compact High Capacity: The 4-inch roll-out diaphragm provides superior performance and gas flow capacities that rival much larger low pressure gas regulators.
• Versatile Installation: The Sensus 496 series supports multiple mounting positions, and the diaphragm case can be rotated in 90-degree increments to accommodate tight piping configurations.
• Overpressure Protection: Integrated internal relief valve (IRV) ensures safety by venting excess pressure, protecting downstream appliances from damage.
• Durable Construction: Built with a cast iron valve body and corrosion-protected cases (e-coated or primed with enamel) for long-term reliability in varying environments.
• Precise Control: Maintains a steady dead-end lockup and precise pressure regulation for modern high-efficiency HVAC equipment.

What is the maximum inlet pressure for the 1/4" orifice?
The Sensus 496-20-1/2 with a 1/4" orifice is rated for a maximum inlet pressure of 60 PSIG. Exceeding this limit can cause damage to the internal components or trigger safety relief.

Can this regulator be used for Propane (LPG) applications?
Yes, while commonly used for natural gas service, the 496 model performs effectively with propane, air, and other non-corrosive dry gases. Always verify the specific gravity on your flow charts for accurate capacity sizing.

What is the purpose of the Green Spring?
The green loading spring defines the adjustable outlet range. For this specific model, it allows for a calibrated set point between 6" and 14" w.c., which covers standard high-pressure residential and commercial burner requirements.

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.