Delavan 00850-70A7 Oil Burner Nozzle 8.5 Gph 70 Degree

Product Description

The DELAVAN 00850-70A7 is a Hollow Cone Type A oil burner nozzle rated at 8.5 gallons per hour (GPH) with a 70-degree spray angle. It atomizes fuel oil into a hollow cone spray pattern, concentrating droplet distribution along the outer edge of the cone. This geometry promotes reliable ignition and low-noise combustion at the burner head. The nozzle is constructed with a brass body and steel orifice disc, and includes a Monel strainer for fuel filtration. It is rated to 100 psi operating pressure. Licensed oil burner technicians and HVAC service professionals install this nozzle during routine annual tune-ups or combustion efficiency service calls.

This nozzle is suited for residential oil-fired heating applications where a hollow cone air pattern is required at the burner. Hollow Cone Type A nozzles are appropriate for throughputs up to 10.00 GPH, making the 8.5 GPH flow rate a common selection for mid-range residential heating units. It is installed at the end of the fuel delivery assembly inside the blast tube of a residential oil burner. The 70-degree spray angle is selected to match the combustion head geometry of the specific burner being serviced.

Key Features

• Hollow Cone Type A spray pattern concentrates droplets on the outer cone edge for stable ignition
• 8.5 GPH flow rate rated at 100 psi operating pressure
• 70-degree spray angle for compatibility with matching combustion head geometries
• Brass body with steel orifice disc for fuel-oil service durability
• Integrated Monel strainer filters fuel before it reaches the orifice
• ISO 9001 applicable standard

Compatibility

Designed as an OEM-style replacement nozzle for residential oil burners requiring a Hollow Cone Type A nozzle at 8.5 GPH and a 70-degree spray angle rated to 100 psi.

Installation Notes

Oil burner nozzle replacement is performed by a licensed oil burner technician or qualified HVAC service professional. Always shut down the burner and isolate electrical power before removing the nozzle assembly. Use a proper nozzle wrench to avoid distorting the nozzle body or the electrode assembly during removal and installation. Verify that the replacement nozzle flow rate, spray angle, and spray pattern match the burner manufacturer specifications before firing the unit.

Technical Specifications

• Flow Rate: 8.5 GPH
• Spray Angle: 70 degrees
• Spray Pattern: Hollow Cone Type A
• 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: 00850-70A7