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The DELAVAN 00500-90a7 is a hollow cone Type A oil burner nozzle rated at 5.00 gallons per hour (GPH) with a 90-degree spray angle. It atomizes fuel oil into a fine hollow cone spray pattern, concentrating droplets along the outer edge of the cone. This design promotes reliable ignition and low-noise combustion in oil-fired heating systems. Licensed oil burner technicians and HVAC service professionals install this nozzle as part of routine burner maintenance or when replacing a worn or incorrect nozzle on residential and light commercial oil-fired equipment.
This nozzle is suited for oil burners that operate with a hollow cone air pattern and flow rates in applications where the hollow cone Type A configuration delivers stable, efficient combustion. At 5.00 GPH and a 90-degree angle, it is appropriate for burners requiring higher throughput while maintaining the droplet distribution characteristics that reduce combustion noise and support consistent ignition performance. It is commonly installed in forced-air furnaces, boilers, and water heaters fired by No. 2 fuel oil.
Designed as a replacement oil burner nozzle for oil-fired heating equipment requiring a hollow cone Type A nozzle at 5.00 GPH and a 90-degree spray angle. Confirm burner manufacturer specifications before installation to ensure correct GPH rating, spray angle, and pattern type.
Oil burner nozzle replacement is performed by licensed oil burner technicians or qualified HVAC service professionals. Shut down the burner and disconnect power before beginning service. Use a proper nozzle wrench to remove and install the nozzle without damaging the nozzle adapter or electrodes. Always verify the replacement nozzle GPH rating, spray angle, and pattern type match the burner manufacturer specifications before firing the unit.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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