Delavan 00550-70A7 Oil Burner Nozzle 5.5 Gph 70 Degree

Product Description

The DELAVAN 00550-70A7 is a Type A hollow-cone oil burner nozzle rated at 5.5 GPH and a 70-degree spray angle, built for residential oil-fired heating equipment. The hollow-cone spray pattern concentrates droplet distribution along the outer edge of the cone, which promotes reliable ignition and low-noise combustion. Constructed with a brass body and a steel orifice disc, this nozzle is designed for continuous service at up to 100 psi operating pressure. An integrated Monel strainer filters the fuel supply before it reaches the orifice, protecting the disc from particulate contamination. HVAC and oil burner technicians install this nozzle as a routine maintenance or service replacement component.

This nozzle is intended for residential oil burner applications where a hollow-cone air pattern is required and throughput falls within the range of up to 10.00 GPH. Hollow-cone Type A nozzles are commonly paired with burners that generate a matching hollow-cone combustion air pattern. Proper nozzle selection by spray angle, flow rate, and cone type is critical to achieving correct flame geometry and combustion efficiency in the specific burner head being serviced.

Key Features

• Hollow-cone Type A spray pattern concentrates droplets at the outer cone edge for stable ignition
• 5.5 GPH flow rate suitable for residential oil-fired appliances with throughputs up to 10.00 GPH
• 70-degree spray angle matches burner heads requiring a wide hollow-cone pattern
• Brass body and steel orifice disc construction for durability under repeated thermal cycling
• Integrated Monel strainer protects the orifice from fuel-borne particulates
• Rated to 100 psi operating pressure in residential service

Compatibility

Designed as an OEM-style replacement nozzle for residential oil burners requiring a Type A hollow-cone spray pattern at 5.5 GPH and a 70-degree angle. Verify burner manufacturer nozzle specifications before installation to confirm flow rate, spray angle, and cone type match the appliance requirements.

Installation Notes

Oil burner nozzle replacement is performed by qualified HVAC or oil burner service technicians as part of annual tune-up procedures. Always shut down the burner and allow the oil supply system to depressurize before removing the existing nozzle. Use an appropriately sized nozzle wrench to avoid damaging the nozzle adapter or electrodes during removal and installation. Follow the burner manufacturer service documentation and applicable local codes for combustion setup after nozzle replacement.

Technical Specifications

• Product Type: Oil Burner Nozzle
• Cone Type: Type A, Hollow Cone
• Flow Rate: 5.5 GPH
• Spray Angle: 70 degrees
• Pressure Rating: 100 psi
• Temperature Rating: 80 degrees F
• Body Material: Brass
• Orifice Disc Material: Steel
• Filter Type: Monel Strainer
• Application: Residential
• Applicable Standard: ISO 9001

Standard Information

• Brand: DELAVAN
• Manufacturer Part Number: 00550-70A7