Delavan Oil nozzle 00550-60W7

The Delavan Oil nozzle 00550-60W7 is a precision consumable part that atomizes fuel oil into a fine spray for complete combustion. It has a flow rate of 5.5 GPH, a spray angle of 60 degrees, and a W spray pattern. This nozzle includes a fuel supply adjustment mechanism, allowing adaptation to changing operating conditions. It is designed for use in oil burners, where it is the final element in the fuel delivery path, mounted in the combustion head.

Parts of this type are selected by three parameters: flow rate, spray angle, and spray pattern (hollow, solid, or semi-solid cone). When replacing a nozzle, verify that the rating, angle, and pattern match the burner data plate, not just the part number. The thread size must also correspond to the burner's nozzle holder; this article uses a standard thread common to most residential and light commercial oil burners.

Items of this kind can fail due to wear or carbon deposits, which alter spray characteristics. Symptoms include sooting, pulsation, or unstable ignition. Regular replacement is recommended whenever combustion quality deteriorates.