Delavan 0.50GPH, 60E (5) nozzle

This is an oil nozzle from Delavan, rated at 0.50 GPH with a 60-degree spray angle and a pattern designated 60E (which corresponds to a specific spray type). The catalogue article and manufacturer code are listed for ordering reference. Parts of this type serve as the final fuel-metering and atomising component in an oil burner assembly. The nozzle converts pressurised liquid fuel into a fine spray cone, allowing complete combustion within the blast tube. Because it is a precision consumable, the correct combination of flow rate, spray angle, and spray pattern must match the burner manufacturer’s specification for proper flame shape and stability. When selecting a replacement nozzle of this class, three parameters must be verified against the burner data plate: flow rate (in GPH at the reference pressure), spray angle (usually between 30° and 80°), and spray pattern (hollow, solid, or semi-solid). Using a nozzle with the correct flow rate but the wrong pattern can lead to sooting, pulsation, or unstable ignition. Equally, an incorrect spray angle may cause the flame to impinge on the combustion head or heat exchanger, reducing efficiency and increasing service issues. The thread size is also standardised within the industry, but always confirm compatibility with the burner’s nozzle adapter. When replacing such a nozzle, ensure the oil supply is isolated and the pump pressure is set to the value specified by the burner manufacturer. Inspect the nozzle seat for damage or debris before fitting the new unit. After installation, check for leaks and verify the flame appearance through the observation port; any deviation from a clean, stable cone indicates a mismatch in rating, angle, or pattern. This article is listed with its specific code and brand; always cross‑reference the original part numbers before ordering.