Reznor 38678 Natural Gas Orifice #45

The Reznor 38678 Orifice 45 PSI is a precision gas metering component used to regulate fuel flow to burner assemblies in heating parts. It operates by controlling the amount of natural gas passing through a calibrated opening, maintain the correct fuel-to-air ratio required for stable combustion. It is commonly installed in unit heaters, furnaces, and commercial HVAC systems operating on natural gas where accurate gas delivery is essential. It supports consistent flame efficiency, assists in efficient burner operation and maintain safe heating output under operating conditions in residential, commercial and industrial applications.