Buse Delavan 35.00GPH, 60B

The oil nozzle is the component that atomises fuel oil into a fine spray cone, enabling complete combustion in the burner. It is a precision consumable part fitted at the end of the oil gun, directly in the combustion head. The nozzle’s rating, spray angle, and pattern together determine how the flame sits relative to the blast tube and combustion head. A mismatch in any of these parameters can cause sooting, pulsation, or unstable ignition, even if the flow rate appears correct. For this reason, replacement must always be made with a nozzle whose three specifications—flow rate, angle, and pattern—exactly match those listed on the burner data plate. Selection of such parts is based on flow rate (given in GPH at the reference pressure), spray angle (typically between 30 and 80 degrees), and spray pattern (hollow cone, solid cone, or semi-solid). The thread size must also be compatible with the oil gun. When servicing a burner, the existing nozzle should be inspected and its markings noted before ordering a replacement. This article is a Delavan nozzle listed as 35.00GPH, 60B, with catalogue article 345.892.236 and manufacturer codes 03500-60B0 and 345.892.236. For correct replacement, the heating engineer must confirm that the rating, angle, and pattern of the existing nozzle correspond to those of this unit. No other compatibility or performance data is available from the source.