Delavan Oil nozzle 00450-80W7

Delavan oil nozzle 00450-80W7 is a precision consumable part for oil burners. It atomises fuel oil into a fine spray cone for combustion. The nozzle has a flow rate of 4.5 GPH (4.5 gallons per hour) and an 80° spray angle. Its spray pattern is W, with pattern variant 7. This nozzle is intended for use with fuel oil and works with compatible components such as solenoid valves and preheaters. Periodic replacement is required as part of routine maintenance.

Nozzles of this type are selected by flow rate, spray angle, and spray pattern; all three parameters must match the burner specification. Verify thread type and dimensions against the existing nozzle before ordering. The nozzle is installed in the oil supply line between the pump and combustion head, working with the solenoid valve and preheater where applicable.

A worn or mismatched nozzle can cause sooting, pulsation, or unstable ignition. As the nozzle wears, the spray pattern changes, leading to poor combustion and higher fuel consumption. Check nozzle condition periodically and replace it during routine burner maintenance.