Delavan Oil nozzle 30609-028

The Delavan 30609-028 is an oil nozzle, a precision consumable that atomizes fuel oil into a fine conical spray for complete combustion in a burner. It is installed between the oil pump and the combustion head, working with the pump solenoid valve and, for heavier oils, a preheater. This nozzle is identified by manufacturer code 30609-028 and is also listed under article number 345.892.003. Its spray characteristics directly influence flame anchoring, so exact selection is critical.

For any oil nozzle, the installer must match three parameters to the burner data plate: flow rate in USgph or kg/h at the reference pressure (typically 7 or 10 bar), spray angle (commonly 30 to 80 degrees), and spray pattern (hollow, solid, or semi-solid cone). The thread size must also fit the adaptor or nozzle holder. Before ordering, verify the existing nozzle's markings to ensure correct replacement.

Oil nozzles are wear items; even small deviations in flow or angle can alter flame shape, reducing efficiency or increasing emissions. Incorrect nozzle selection can cause sooting, pulsation, or unstable ignition. Check the nozzle for wear or blockage if these symptoms occur.