Delavan 1.65-45-A Oil Burner Nozzle 1.65 Gph 45 Degree

Product Description

The DELAVAN 1.65-45-A is a hollow cone oil burner nozzle rated at 1.65 gallons per hour (GPH) with a 45-degree spray angle and a 100 psi operating pressure. It is identified by a red vial for quick field identification. This nozzle meters and atomizes fuel oil into the combustion chamber of an oil-fired burner, producing a hollow cone spray pattern where droplet distribution is concentrated at the outer edge of the cone. That geometry supports reliable ignition and low-noise combustion. Licensed oil burner technicians and HVAC service professionals install and replace these nozzles during routine tune-ups or combustion performance calls.

The Type A hollow cone pattern is suited for burners that use a hollow cone air pattern and for fuel throughputs up to 2.00 GPH. Typical applications include residential and light-commercial oil-fired heating systems where the burner head is matched to a hollow cone air distribution. This nozzle is commonly replaced on an annual basis as part of a seasonal oil burner service to maintain rated combustion efficiency and prevent carbon buildup caused by degraded atomization.

Key Features

• Hollow cone Type A spray pattern concentrates droplets at the outer edge of the cone for stable, low-noise combustion
• 1.65 GPH flow rate at 100 psi operating pressure
• 45-degree spray angle matched to compatible burner head geometries
• Red vial color coding allows fast nozzle identification in the field without measuring
• Suitable for throughputs up to 2.00 GPH, covering a range of residential oil burner sizes

Compatibility

Designed as an OEM-style replacement nozzle for oil-fired burners requiring a hollow cone Type A nozzle at 1.65 GPH, 45-degree spray angle, and 100 psi operating pressure.

Installation Notes

Oil burner nozzle replacement is performed by licensed oil burner technicians or qualified HVAC service professionals. Before servicing, shut off power to the burner at the service switch and allow the combustion chamber to cool completely. Use a nozzle wrench to remove and install the nozzle to avoid damaging the nozzle adapter or electrode assembly. After replacement, verify combustion performance with a flue gas analyzer to confirm proper air-to-fuel ratio before returning the system to service.

Technical Specifications

• Flow Rate: 1.65 GPH
• Spray Angle: 45 degrees
• Operating Pressure: 100 psi
• Spray Pattern: Hollow Cone
• Nozzle Type: Type A
• Vial Color: Red
• Application: Oil Burner

Standard Information

• Brand: DELAVAN
• Manufacturer Part Number: 1.65-45-A