Delavan 55X80B Oil Burner Nozzle 0.55 Gph 80 Degree Solid Cone

Product Description

The DELAVAN 55X80B is a solid-cone oil burner nozzle rated at 0.55 gallons per hour (GPH) with an 80-degree spray angle. It delivers a dense, concentrated fuel pattern designed to support strong ignition, stable flame shape, and efficient combustion in oil-fired heating equipment. The brass housing and stainless-steel metering components provide corrosion resistance and consistent flow accuracy over extended service cycles. At 1.625 inches in length with a 0.75-inch outer diameter and 9/16-24 UNEF threads, it installs directly into standard oil burner assemblies. HVAC and oil burner service technicians use this nozzle as an OEM-style replacement to restore rated burner efficiency.

The 55X80B is suited for residential and light-commercial oil-fired heating systems where a solid-cone spray pattern is specified. The solid-cone designation means fuel is distributed evenly throughout the cone volume, making it appropriate for burners that require a concentrated, fully filled spray for proper combustion. It is commonly installed in forced-air oil furnaces, oil boilers, and oil-fired water heaters that call for a 0.55 GPH flow rate at an 80-degree angle. Always verify the burner manufacturer's nozzle specification before selecting a replacement.

Key Features

• Solid-cone spray pattern delivers a dense, fully filled fuel distribution for concentrated combustion
• Rated at 0.55 GPH for precise fuel metering in low-fire residential applications
• 80-degree spray angle matches burner head geometry requiring a wide, compact flame
• Brass housing with stainless-steel metering parts for durability and corrosion resistance
• 9/16-24 UNEF thread fits standard oil burner nozzle adapters
• OEM-style replacement that restores rated combustion efficiency

Compatibility

Designed as an OEM-style replacement nozzle for oil-fired burners requiring a 0.55 GPH, 80-degree solid-cone spray pattern with 9/16-24 UNEF threads. Confirm the burner manufacturer's nozzle specification before installation.

Installation Notes

Oil burner nozzle replacement is performed by licensed HVAC technicians or qualified oil burner service professionals. Shut down the burner and allow the system to cool before beginning service. Use a proper nozzle wrench to remove and install the nozzle without damaging the adapter or electrode assembly. After installation, verify combustion performance with a flue gas analyzer and adjust air settings as needed per the burner manufacturer's service instructions.

Technical Specifications

• Flow Rate: 0.55 GPH
• Spray Angle: 80 degrees
• Spray Pattern: Solid Cone
• Length: 1.625 inches
• Outer Diameter: 0.75 inches
• Thread Size: 9/16-24 UNEF
• Housing Material: Brass
• Metering Components: Stainless Steel

Standard Information

• Brand: DELAVAN
• Manufacturer Part Number: 55X80B