Fluidics 1.75GPH, 60H Düse

This is a Fluidics 1.75GPH, 60H oil nozzle, catalogue article 480.892.052. An oil nozzle is a precision consumable that atomises fuel oil into a fine spray cone, allowing complete combustion in the burner head. The spray pattern, angle and flow rate together determine how the flame sits and burns. The nozzle works directly with the oil pump and solenoid valve; in many oil burners a preheater may also be upstream of the nozzle assembly. Nozzles of this type are selected by three parameters: the flow rate, quoted here in US gallons per hour (GPH) at a standard reference pressure; the spray angle (here 60 degrees); and the spray pattern – hollow, solid or semi-solid. The thread size must also match the burner adapter. All three parameters must be taken from the burner data plate; fitting a nozzle with the correct flow rate but an incorrect pattern can cause sooting, pulsating flame or unreliable ignition. A 60H designation indicates a 60-degree hollow cone pattern, but for replacement the exact rating, angle and pattern shown on the existing nozzle or burner specification should be confirmed. When replacing, always use a nozzle of the same brand and the same specification as originally fitted. Do not rely on part number alone to decode spray angle or pattern; verify against the burner manual. The oil nozzle is a high-wear item and should be changed annually or as part of scheduled maintenance.