Delavan 00850-80A7 Hollow Cone Nozzle 8.50 Gph 80 Degree

Product Description

The DELAVAN 00850-80A7 is a hollow cone oil burner nozzle rated at 8.50 gallons per hour (GPH) with an 80-degree spray angle. It is designed to atomize fuel oil into a fine, evenly distributed hollow cone spray pattern for efficient combustion in residential and light commercial oil-fired heating equipment. The nozzle includes an integral mesh strainer that filters particulates from the fuel supply before they reach the nozzle orifice. Licensed oil burner technicians install this component during routine annual servicing or when combustion performance degrades.

This nozzle is suited for oil-fired furnaces, boilers, and water heaters that require an 8.50 GPH flow rate at a standard operating pressure of 100 psi. The 80-degree hollow cone spray pattern is commonly specified in burner applications where a wide, ring-shaped flame shape is needed for proper combustion chamber fit. Technicians should match the GPH rating, spray angle, and pattern type exactly to the burner manufacturer's specification to maintain proper air-to-fuel ratio and combustion efficiency.

Key Features

• 8.50 GPH flow rate rated at standard 100 psi operating pressure
• 80-degree spray angle for wide hollow cone flame geometry
• Hollow cone spray pattern produces a ring-shaped fuel distribution profile
• Integral mesh strainer helps prevent orifice fouling from fuel contaminants
• Direct replacement style nozzle for oil burner annual maintenance

Compatibility

Designed as a replacement oil burner nozzle for residential and light commercial oil-fired furnaces, boilers, and water heaters requiring an 8.50 GPH, 80-degree hollow cone nozzle. Confirm the burner manufacturer's nozzle specification before installation.

Installation Notes

Oil burner nozzle replacement is performed by a licensed oil burner technician in accordance with applicable local codes and NFPA 31 guidelines. Shut down the burner and allow the fuel supply line to depressurize before removing the nozzle. Use a proper nozzle wrench to avoid damaging the nozzle adapter or electrodes. Never reuse a removed nozzle — nozzles are single-season service items.

Technical Specifications

• Flow Rate: 8.50 GPH
• Spray Angle: 80 degrees
• Spray Pattern: Hollow Cone
• Strainer: Mesh strainer included

Standard Information

• Brand: DELAVAN
• Manufacturer Part Number: 00850-80A7