Delavan 00550-90B7 Oil Burner Nozzle 5.50 Gph 90 Degree Type B

Product Description

The DELAVAN 00550-90B7 is a Type B solid cone oil burner nozzle rated at 5.50 gallons per hour (GPH) with a 90-degree spray angle. It is designed for residential oil-fired heating systems where smooth, consistent fuel atomization is required. The brass body and steel orifice disc construction deliver reliable service under continuous burner operation. The solid cone spray pattern distributes droplets uniformly throughout the complete pattern at standard operating pressures. At flow rates above 8.00 GPH the pattern becomes progressively more hollow, but at 5.50 GPH this nozzle maintains a full, even distribution suited to efficient combustion in residential-scale burners. Licensed oil burner technicians are the primary installers of this component.

This nozzle is intended for residential oil burner applications. It operates at a rated pressure of 100 psi and a temperature rating of 80 degrees F. The sintered filter element integrated into the nozzle assembly helps protect the orifice disc from particulate contamination in the oil supply. The solid cone Type B pattern is particularly effective in larger residential burners where uniform droplet distribution across the full spray cone promotes stable ignition and complete combustion throughout the firing cycle.

Key Features

• Type B solid cone spray pattern for uniform droplet distribution at 5.50 GPH
• 90-degree spray angle for broad combustion chamber coverage
• Brass body and steel orifice disc construction for durability in continuous service
• Sintered filter element protects the orifice from fuel-line particulates
• Rated to 100 psi operating pressure
• Manufactured under ISO 9001 quality standards

Compatibility

Designed as an OEM-style replacement nozzle for residential oil-fired burner systems requiring a Type B solid cone, 5.50 GPH, 90-degree nozzle at 100 psi operating pressure.

Installation Notes

Oil burner nozzle replacement is performed by licensed oil burner technicians or qualified HVAC service professionals. Shut down the burner and allow all components to cool before servicing the nozzle assembly. Use the correct nozzle wrench to avoid damaging the brass body or nozzle adapter. After installation, verify burner firing rate, combustion air settings, and flue gas readings before returning the system to service.

Technical Specifications

• Product Type: Oil Burner Nozzle
• Nozzle Type: Type B Solid Cone
• Flow Rate: 5.50 GPH
• Spray Angle: 90 degrees
• Pressure Rating: 100 psi
• Temperature Rating: 80 degrees F
• Body Material: Brass
• Orifice Disc Material: Steel
• Filter Type: Sintered
• Application: Residential
• Applicable Standard: ISO 9001

Standard Information

• Brand: DELAVAN
• Manufacturer Part Number: 00550-90B7