Delavan Oil nozzle 30609-011

The Delavan Oil nozzle 30609-011 is a solid cone oil nozzle with a brass body, designed for use in oil, diesel, and other burners. It atomizes fuel into a fine spray to create a homogeneous mixture with air, ensuring efficient combustion. The nozzle features large flow passages to prevent clogging and a universal thread for easy installation. It is suitable for various liquids including heating oil, diesel fuel, and used motor oil.

Oil nozzles of this type are selected based on three parameters that must match the burner data plate: flow rate (in US gallons per hour or kg/h at a reference pressure, typically 7 bar or 100 psi), spray angle (commonly between 30° and 80°), and spray pattern (hollow cone, solid cone, or semi-solid cone). The thread size (usually 1/8" or 1/4" BSP or NPT) must also fit the nozzle adaptor. When replacing, ensure the nozzle is clean and free from damage, and check that the O-ring or sealing washer is in good condition to prevent leaks.

Oil nozzles can fail due to carbon build-up or erosion, leading to improper atomization. Symptoms include sooting, pulsating flame, or delayed ignition. Regular inspection and replacement at the interval specified by the burner manufacturer are necessary to maintain performance.