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The DELAVAN 00700-70b7 is a Solid Cone Type B oil burner nozzle rated at 7.00 gallons per hour (GPH) with a 70-degree spray angle. The nozzle distributes fuel droplets uniformly throughout the full spray pattern at rated flow, supporting smooth ignition and consistent combustion in residential oil-fired heating systems. At flow rates above 8.00 GPH the pattern becomes progressively more hollow, but at 7.00 GPH the solid cone geometry maintains even droplet distribution across the flame envelope. Licensed oil burner technicians and HVAC service professionals install this nozzle as part of routine annual service or burner head replacement procedures.
This nozzle is intended for residential oil burner applications operating at a rated pressure of 100 psi. The solid cone spray pattern is particularly well-suited to larger residential burner configurations where uniform droplet distribution across the full cone is needed for efficient combustion and stable flame retention. It performs within a temperature rating of 80 degrees F and is compatible with standard residential oil burner assemblies using sintered filter elements at the nozzle inlet.
Designed as an OEM-style replacement nozzle for residential oil-fired heating systems requiring a Type B solid cone nozzle at a 7.00 GPH flow rate and 70-degree spray angle operating at 100 psi.
Oil burner nozzle replacement should be performed by a licensed oil burner technician or qualified HVAC service professional. Shut down the burner and allow all components to cool before removing the nozzle assembly. Use an appropriate nozzle wrench to avoid damaging the brass body or nozzle adapter; do not overtighten. After installation, verify burner operation and combustion quality with appropriate test instruments in accordance with applicable service standards 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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