Reznor 11831 Orifice This specific model is optimized

This specific model is optimized for 60Hz operation

thereby minimizing system downtime

22 and NSF/ANSI 61 standards for lead-free compliance and structural integrity

It is recommended to use the full length or loop the excess away from grounded metal surfaces rather than cutting

reducing unnecessary service callbacks for manual resets

Reznor 11831 Orifice This specific model is optimizedThe Reznor 11831 Orifice is a critical OEM replacement part designed for precision fuel regulation in gas fired heating systems. This brass gas orifice plug is specifically sized as a #35 natural gas orifice, ensuring the exact manifold pressure and BTU input required for optimal burner performance. In the field, installing the correct unit heater orifice is the difference between a clean, efficient burn and dangerous overfiring or soot accumulation.