Fluidics 7.00GPH, 60SF nozzle

This article is an oil nozzle from Fluidics, listed in the oil nozzle category. The catalogue name gives a flow rate and spray designation, but the exact meaning of the characters is not decoded here. The part is a precision consumable that atomises fuel oil into a fine cone so that it can burn completely. In an oil burner, the nozzle sits at the end of the blast tube inside the combustion head. It works together with the oil pump, solenoid valve, and, where fitted, a preheater. The pump delivers pressurised oil to the nozzle, and the solenoid controls the flow during the start and stop sequence. Parts of this type are selected by three parameters that must all match the burner data plate: flow rate at the reference pressure (given in GPH or kg/h), spray angle (typically between 30 and 80 degrees), and spray 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 type also matters, but it is standardised for most domestic and industrial oil nozzles. When replacing a nozzle, the old one should be removed carefully to avoid damaging the seating, and the new nozzle must be torqued to the maker’s specification. The burner data plate or the original part number is the safest guide for a correct match. This specific Fluidics article, catalogue number 480.892.046, is one such nozzle; its exact rating and pattern can be verified from the burner documentation or manufacturer data.