Delavan Oil nozzle 30609-001

The Delavan Oil nozzle 30609-001 is a consumable component designed for atomizing viscous fuels, including waste oil, in heating equipment. It creates a cone-shaped fine spray under low air pressure, with a spray pattern that varies based on fuel characteristics and flow rate. The nozzle features large passage openings to prevent clogging and is constructed from corrosion-resistant brass and steel. It has a conical nozzle head and a hex on the body for easy installation with a wrench. This nozzle is factory tested and meets safety and reliability standards.

When selecting a replacement oil nozzle, three parameters from the burner data plate must match: flow rate at the reference pressure (in gph or kg/h), spray angle (typically 30 to 80 degrees), and spray pattern (hollow, solid, or semi-solid). The nozzle is mounted on a thread at the end of the blast tube, downstream of the oil pump and solenoid valve. Ensure the thread type and size are compatible with the burner. A nozzle with the correct rating but wrong pattern can cause sooting, pulsation, or unstable ignition, so all three parameters must correspond exactly.

Worn or clogged oil nozzles can cause incomplete combustion, leading to soot buildup on the heat exchanger and flue. The burner may exhibit pulsation, unstable ignition, or a yellow, smoky flame. Reduced atomization quality can result in fuel droplets not burning completely, increasing fuel consumption and emissions. Regular inspection and replacement of the nozzle when worn are necessary to maintain proper combustion.