Delavan Oil nozzle 30609-043

The Delavan Oil nozzle 30609-043 is a solid cone oil nozzle designed for atomizing fuel oil into fine particles at low air pressure. It is made of brass and is suitable for use with fuel oil, including waste oils. The nozzle features large flow passages to prevent clogging and is intended for use in oil-fired burners to ensure complete combustion.

Parts of this type are selected by three parameters: flow rate (expressed in US gallons per hour or kg/h at a reference pressure), spray angle (commonly 30 to 80 degrees), and spray pattern (hollow cone, solid cone, or semi-solid cone). The thread size must match the burner's nozzle adapter. When replacing a nozzle, clean the nozzle adapter and replace the strainer if the burner has one. Nozzles are not repairable and should be replaced as part of annual maintenance or whenever flame quality deteriorates.

Items of this kind can fail due to clogging, wear, or incorrect selection, leading to sooting, pressure pulsation, or unstable ignition. Symptoms include poor flame quality, incomplete combustion, or difficulty starting. Check the nozzle for blockages or damage and verify that the spray pattern and angle match the burner's requirements.