Fluidics 12 W2-150-45 Düse

This is a Fluidics 12 W2-150-45 oil nozzle, catalogue article 480.892.055, listed under oil nozzles. Parts of this type are precision consumables that atomise fuel oil into a fine cone for complete combustion. The flame shape and stability depend on three interrelated parameters: flow rate (expressed in GPH or kg/h at a reference pressure), spray angle (typically 30 to 80 degrees), and spray pattern (hollow, solid, or semi-solid). All three must match the burner data plate; using a correct flow rate but wrong pattern can cause sooting, pulsation, or unstable ignition. When replacing an oil nozzle, always check the existing nozzle’s stamped rating and confirm it against the burner manufacturer’s specification. The thread size must also be compatible with the nozzle holder. Even a slight deviation in angle or pattern alters where the flame sits in the combustion head, affecting heat transfer and emissions. These parts have a finite service life and should be replaced at scheduled maintenance intervals or if combustion readings drift. In the fuel system, the oil nozzle is the final component before the combustion chamber. It receives pressurised oil from the pump, which is controlled by the solenoid valve and, on heavy oil, may be preceded by a preheater. The nozzle itself has no moving parts; its performance depends entirely on accurate machining of the orifice and internal swirl chamber. Nozzles of this class are not interchangeable by appearance alone—always verify the stamped markings.