Delavan 125-80a1 Hollow Oil Burner Nozzle

Product Description

The DELAVAN 125-80a1 is a hollow-cone oil burner nozzle designed to atomize fuel oil and deliver a precise spray pattern inside a residential or light commercial oil-fired burner assembly. The hollow-cone spray pattern concentrates fuel at the outer edge of the spray envelope, which supports stable ignition and clean combustion. This nozzle is installed by licensed oil burner technicians during routine maintenance, nozzle replacement service, or burner tune-up procedures. It is a direct-fit consumable part changed on a scheduled basis to maintain system efficiency and minimize carbon buildup in the combustion chamber.

This nozzle is suited for oil-fired heating equipment including residential boilers and furnaces that operate with standard No. 2 fuel oil. The hollow-cone configuration is commonly specified in applications where the burner head geometry and air-handling design call for a more concentrated, outer-edge spray pattern. Technicians should verify the flow rate, spray angle, and nozzle type designation against the equipment manufacturer's service specifications before installation.

Key Features

• Hollow-cone spray pattern for concentrated outer-edge fuel distribution
• Precision-machined orifice for consistent atomization and combustion performance
• Designed for use with standard No. 2 fuel oil in oil-fired burner assemblies
• Consumable replacement part suitable for scheduled annual maintenance
• Compact nozzle form factor compatible with standard oil burner nozzle adapters

Compatibility

Designed as an OEM-style replacement nozzle for residential and light commercial oil-fired burners that specify a hollow-cone nozzle configuration. Verify flow rate, spray angle, and cone type against the original equipment specification before installing.

Installation Notes

Oil burner nozzles are installed by qualified oil burner service technicians in accordance with applicable local codes and NFPA 31 guidelines. Shut down the burner, allow the system to cool, and close the fuel supply valve before removing the old nozzle. Use a properly sized nozzle wrench to avoid damaging the nozzle adapter or electrodes. Never reuse a removed nozzle — replace with a new nozzle of the correct flow rate, angle, and spray pattern at each annual service interval.