Delavan 1.00-90-A Oil Burner Nozzle 1 Gph 90 Degree Hollow Cone

Product Description

The DELAVAN 1.00-90-A is a hollow-cone oil burner nozzle rated at 1.00 gallon per hour (GPH) with a 90-degree spray angle and a 100 psi operating pressure. It is identified by a red vial for quick field identification. This Type A hollow-cone nozzle is engineered for oil-fired burners where the air pattern is also hollow cone in configuration. Droplet distribution concentrates on the outer edge of the spray cone, which promotes reliable ignition and low-noise combustion. Licensed oil burner technicians install this nozzle as part of routine annual service or burner tune-up procedures.

This nozzle is suited for residential and light commercial oil-fired heating equipment, including forced-air furnaces, boilers, and water heaters equipped with gun-style oil burners. The Type A hollow-cone pattern is appropriate for throughputs up to 2.00 GPH, making the 1.00 GPH flow rate well within its intended operating range. It is a direct service replacement installed during seasonal startup, efficiency testing, or combustion analysis service calls.

Key Features

• 1.00 GPH flow rate for precise fuel delivery in oil-fired burner applications
• 90-degree hollow-cone spray angle matches burner air patterns designed for hollow-cone atomization
• Rated for 100 psi operating pressure
• Droplet distribution concentrated at cone perimeter promotes stable ignition and quiet combustion
• Red vial color-coding allows fast identification without reading stamped markings in the field
• Type A hollow-cone design supports throughputs up to 2.00 GPH

Compatibility

Designed as an OEM-style replacement nozzle for oil burners that require a hollow-cone Type A spray pattern at 1.00 GPH and a 90-degree angle.

Installation Notes

Oil burner nozzles are replaced by licensed oil burner technicians or qualified heating service professionals. Shut down the burner and allow the fuel system to depressurize before removing the nozzle assembly. Use a proper nozzle wrench to avoid damaging the nozzle adapter or electrodes during removal and installation. Verify combustion performance with a flue gas analyzer after replacement to confirm proper air-fuel ratio and efficiency.

Technical Specifications

• Flow Rate: 1.00 GPH
• Spray Angle: 90 degrees
• Operating Pressure: 100 psi
• Spray Pattern: Hollow Cone
• Nozzle Type: Type A
• Vial Color: Red

Standard Information

• Brand: DELAVAN
• Manufacturer Part Number: 1.00-90-A