Delavan Oil nozzle 00600-45B7

This is a Delavan oil nozzle, model 00600-45B7, with a flow rate of 6 GPH and a spray pattern designated B. It is an OEM equivalent to part number 3042211 and is used in domestic and industrial high-pressure burners that fire oil. The nozzle atomizes fuel into a fine spray for efficient combustion.

For replacement, parts of this type are selected by three parameters: flow rate, spray angle, and spray pattern. These must match the burner data plate; a mismatch can cause sooting, pulsation, or unstable ignition. The thread size is standard for such burners. Always verify the existing part number or the burner manual to ensure the rating, angle, and pattern are identical.

Items of this kind are wear items and should be inspected annually. If the spray pattern becomes distorted, or if the burner shows signs of poor combustion such as smoke or unburnt fuel, the nozzle likely needs replacement. A nozzle with the correct flow rate but wrong pattern can cause sooting, pulsation, or unstable ignition.