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Pulse arcade — neon hairlines and corner brackets frame the playfield brief.
The "R" stands for Replacement
While possible
Engineered for maximum evaporative efficiency
Whether you are performing a pneumatic thermostat conversion or a new 2-pipe installation
ensuring exact volumetric control of liquid propane flow to the burner assembly
Reznor 11831 Orifice The "R" stands for ReplacementThe 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.
