Field-Proven Durability: Features high-temperature ceramic construction that outlasts standard plastic versions in high-heat zones

Its snap-fit design

Common Questions & Technical Support How do I ensure the DST1

High Pressure Rated: Engineered to maintain seal integrity under standard refrigeration vacuum and pressure ranges

Always verify the part number against your specific unit's rating plate or manual before installation

Reznor 11831 Orifice Field-Proven Durability: Features high-temperature ceramicThe 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.