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The DELAVAN 00700-30B7 is an oil burner nozzle rated at 7.00 gallons per hour (GPH) with a 30-degree spray angle and a Type B spray pattern. Oil burner nozzles atomize fuel oil into a fine mist that ignites cleanly in the combustion chamber of a forced-air oil furnace, oil boiler, or oil-fired water heater. The 30-degree angle produces a narrow, concentrated spray suited for specific combustion chamber geometries, while the Type B pattern delivers a semi-solid cone that distributes fuel evenly across the flame front. HVAC technicians and oil burner service professionals install these nozzles during routine tune-ups and combustion efficiency service calls.
This nozzle is a standard replacement component used in residential and light-commercial oil heating systems. It fits into the nozzle adapter of most gun-type oil burners and is selected based on burner fuel delivery requirements, combustion chamber dimensions, and system BTU output. Proper nozzle selection — matching GPH rating, spray angle, and spray pattern to the burner manufacturer's specifications — is essential for clean combustion and efficient operation. This 7.00 GPH, 30-degree Type B nozzle covers a common mid-range fuel delivery rate found in many residential oil heating installations.
Designed as an OEM-style replacement nozzle for gun-type oil burners requiring a 7.00 GPH, 30-degree, Type B spray configuration. Always verify against the burner manufacturer's nozzle specification table before installation.
Oil burner nozzles are installed by licensed HVAC technicians or qualified oil burner service professionals. Shut down the burner and allow all components to cool before beginning nozzle replacement. Use a proper nozzle wrench to remove and seat the nozzle without cross-threading the adapter, and avoid touching the nozzle orifice. After installation, verify combustion performance with a flue gas analyzer in accordance with applicable service standards.
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