Delavan Oil nozzle P0055-80W1

The Delavan P0055-80W1 is an oil nozzle designed for atomizing fuel oil into a fine spray for combustion in burners. It has a capacity of 0.55 gallons per hour (GPH) and a spray angle of 80 degrees. The spray pattern is designated as 'W', which indicates a specific pattern type. This nozzle is used for fuel dose adjustment and is a consumable part that should be replaced at every service interval. Its article number is 345.892.083.

Oil nozzles of this type are selected by three parameters: flow rate (GPH), spray angle, and spray pattern. The flow rate and angle must match the burner's data plate, and the spray pattern (hollow, solid, or semi-solid) must be verified against the original specification. Before ordering, check the old nozzle's stamped markings to confirm these values. Thread size is standard but must be compatible with the burner's nozzle holder.

When oil nozzles fail or are incorrectly matched, symptoms include sooting, flame pulsation, unstable ignition, and carbon deposits on the blast tube. Erosion from fuel impurities can alter the spray pattern, leading to incomplete combustion and soot build-up in the combustion chamber. Regular inspection and replacement at service intervals are necessary to maintain proper atomization.