Sensus 122-8-1 Regulator

For high-demand industrial combustion systems, the Sensus 122-8-1 1" Orifice Regulator provides the precision necessary for stable gas pressure regulation. This industrial combustion gas regulator is specifically engineered with a 1-inch orifice to manage high-volume loads while maintaining a tight lockup. Designed for a 1" NPT inlet and outlet connection, this model features a 6-14" WC outlet pressure range, making it ideal for large boilers, furnaces, and commercial water heaters where consistent fuel delivery is critical for thermal efficiency.

The Sensus 122-8-1 utilizes a precision-machined knife-edge orifice and molded soft seats to ensure positive tight shutoff, preventing downstream pressure creep during periods of low or no demand. The cast iron body and die-cast aluminum diaphragm case provide the mechanical durability required in mechanical rooms and vault installations. With its internal sensing capability and large-area double-acting vent damper, this low pressure gas regulator reacts rapidly to snap-acting loads without the hunting or instability common in smaller capacity units.

Key Benefits

• High Capacity Flow: Optimized streamline body passages allow for maximum throughput with minimal pressure drop across the 1" orifice.
• Exceptional Stability: The integrated double-acting vent damper eliminates oscillations even under rapid-cycle combustion sequences.
• Reduced Installation Costs: Features internal sensing, removing the need for an external control line in most standard applications.
• Adjustable Performance: The 6-14" WC spring is easily adjusted to meet specific burner manifold requirements.
• Field Serviceable: The removable orifice and color-coded springs simplify maintenance and range changes for service technicians.

Common Questions

What is the maximum inlet pressure for the Sensus 122-8-1?
The standard maximum inlet pressure for this model is 15 PSIG. For emergency conditions, it can withstand up to 20 PSIG without internal damage, though performance is optimized at lower inlet pressures.

Can this regulator be used with Propane (LP) gas?
Yes, the Sensus 122-8-1 Gas Pressure Regulator is compatible with natural gas, LP gas, nitrogen, and other non-corrosive gases. Note that capacities will vary based on the specific gravity of the gas being regulated.

Is an external control line required?
In most installations, the internal sensing tube provides accurate pressure control. However, a 1/4" NPT tap is available if your specific application requires an external sensing connection for more precise downstream monitoring.

This item is not eligible for free shipping.

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.