Delavan 00350-90A7 Oil Burner Nozzle 3.50 Gph 90 Degree

Product Description

The DELAVAN 00350-90A7 is a hollow-cone oil burner nozzle rated at 3.50 GPH with a 90-degree spray angle, designed for residential oil-fired heating systems. Built with a brass body and steel orifice disc, it atomizes fuel oil into a hollow-cone pattern where droplet distribution concentrates on the outer edge of the cone. This geometry supports reliable ignition and low-noise combustion. The sintered filter screens incoming fuel before it reaches the orifice disc. Rated to 100 psi and 80 degrees F, it suits standard residential oil burner operating conditions. Licensed HVAC technicians and oil burner service professionals are the primary installers of this component.

This nozzle is suited to residential oil burners that use a hollow-cone air pattern. Type A hollow-cone nozzles are typically applied on burners where throughput does not exceed 2.00 GPH at standard pressure, though this unit is rated at 3.50 GPH. The hollow-cone spray pattern works with burner head designs that introduce combustion air in a matching annular pattern, promoting stable flame geometry and consistent heat release in forced-air furnaces and boilers fired with No. 2 fuel oil.

Key Features

• Hollow-cone Type A spray pattern concentrates droplets on the outer cone edge for reliable ignition
• 3.50 GPH flow rate at rated operating pressure of 100 psi
• 90-degree spray angle suits burner heads designed for wide-angle hollow-cone air patterns
• Brass body construction resists corrosion in fuel oil service
• Steel orifice disc provides a durable, precise atomization edge
• Integrated sintered filter protects the orifice from particulate contamination
• Manufactured under ISO 9001 quality management standards

Compatibility

Designed as an OEM-style replacement nozzle for residential oil burners configured for hollow-cone Type A spray patterns with a 90-degree angle and a 3.50 GPH flow rate at 100 psi.

Installation Notes

Oil burner nozzle replacement is performed by licensed oil burner technicians or qualified HVAC service professionals. Always shut down the burner, close the fuel supply valve, and allow the retention head assembly to cool before removing the nozzle. Use a proper nozzle wrench to avoid damage to the nozzle adapter or electrodes. Nozzle replacement is typically part of an annual service procedure that also includes inspecting electrodes, the retention head, and the fuel filter per manufacturer and applicable local heating codes.