Delavan 0.65GPH, 60W (5) nozzle

This is a Delavan 0.65GPH, 60W (5) nozzle, listed under catalogue article 345.892.074 and manufacturer codes P0065-60W5, 3042042. It belongs to the oil nozzle category. Oil nozzles are precision consumable parts that atomise fuel oil into a fine spray cone, ensuring complete combustion. The nozzle’s rating, spray angle and spray pattern together determine how the flame sits in the combustion head. For any replacement, all three parameters must match the burner data plate: flow rate (in GPH or kg/h at the reference pressure), spray angle (typically between 30 and 80 degrees), and pattern (hollow, solid or semi-solid). Using a nozzle with the correct flow rate but the wrong pattern can cause sooting, pulsation, or unstable ignition. The thread size must also correspond to the nozzle holder. This specific article is identified by its flow rate and a code indicating the spray angle and pattern. When sourcing a replacement, verify that the designation on the burner plate corresponds directly to the nozzle’s markings, and confirm that the part is intended for the same fuel type (light oil, heavy oil, etc.). Always handle nozzles with care to avoid damaging the orifice, and replace them as part of regular burner maintenance.