Oil burner nozzles have the job of spraying heating oil into the combustion chamber in a spray pattern of the right size and shape to properly fit the equipment and to assure a fine spra… See more

In our example photo, the red plastic cap on the oil burner nozzle container shows that I"m holding a 0.85 gph 80° angle A-Pattern nozzle. [Click to enlarge any image] Cut to the c… See more

The metering rate is expressed in gph and is the capacity of the oil burner nozzle to deliver heating oil or the capacity of the oil burner to deliver BTUs. This is the nozzle firing rate - … See more

For example the nozzle may be stamped 80°. That defines an 80° spray angle (80 degrees). Our illustrations explaining the relationship between oil burner spray angle and flame l… See more