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The DELAVAN 00055-70a1 is a hollow cone oil burner nozzle rated at 0.55 gallons per hour (GPH) with a 70-degree spray angle. It meters and atomizes fuel oil into the combustion chamber of a residential or light-commercial oil-fired burner, producing a consistent hollow cone spray pattern that supports clean, efficient ignition. This nozzle is a consumable wear item replaced during routine burner tune-ups and annual service visits. HVAC and oil heat technicians select nozzle flow rate, spray angle, and pattern type based on the specific burner and heat exchanger design in the appliance being serviced.
The 00055-70a1 is suited for oil-fired forced-air furnaces, boilers, and water heaters that call for a 0.55 GPH flow rate with a 70-degree hollow cone pattern. The hollow cone designation produces a ring-shaped spray distribution, which is appropriate for burner heads and combustion chambers designed to work with that atomization profile. Technicians match nozzle specifications to the appliance manufacturer's rating plate and service manual requirements before installation.
Designed as an OEM-style replacement nozzle for oil-fired burners requiring a 0.55 GPH, 70-degree hollow cone nozzle specification. Always verify the appliance rating plate and burner manufacturer service documentation before substituting any nozzle.
Oil burner nozzle replacement is performed by licensed oil heat technicians or qualified HVAC service professionals. Before servicing, shut down the burner and disconnect power to the unit at the service switch. Use a proper nozzle wrench to remove and install the nozzle without damaging the nozzle adapter or electrodes. After installation, verify ignition, flame quality, and combustion efficiency with appropriate test instruments before returning the system to service.
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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