Delavan 00450-45w7 Oil Burner Nozzle 4.5 Gph 45 Degree

Product Description

The DELAVAN 00450-45w7 is a Type W all-purpose oil burner nozzle rated at 4.5 GPH with a 45-degree spray angle. Constructed with a brass body and steel orifice disc, it delivers a semi-hollow cone pattern that sits between a true solid and true hollow cone. This makes it adaptable across a wide range of residential oil-fired heating equipment. The Type W designation means it can substitute for solid or hollow cone nozzles across flow rates from 0.40 to 8.00 GPH regardless of the burner air pattern, with lower flow rates trending toward a more hollow spray. A Monel strainer filters the oil supply ahead of the orifice, protecting the disc from debris. Licensed oil burner technicians install this nozzle as part of routine annual service or combustion tune-up work.

This nozzle is suited for residential oil-fired heating applications including boilers and forced-air furnaces. Its all-purpose spray pattern is particularly useful when the burner air pattern is uncertain or when a single nozzle type must serve across multiple equipment configurations. It is rated for operation at 100 psi and up to 80 degrees F, aligning with standard residential oil burner operating conditions. The 4.5 GPH flow rate positions it in the mid-range of common residential heating nozzle sizes.

Key Features

• Type W all-purpose spray pattern — usable in place of solid or hollow cone nozzles from 0.40 to 8.00 GPH
• 4.5 GPH flow rate at 100 psi standard operating pressure
• 45-degree spray angle for compatible burner head geometry
• Brass body with steel orifice disc for durability in oil service
• Monel strainer filters fuel ahead of the orifice
• Manufactured to ISO 9001 quality standards

Compatibility

Designed for residential oil burner applications requiring a Type W all-purpose nozzle at 4.5 GPH and 45-degree spray angle. The Type W pattern is compatible with burners across varying air patterns and can replace solid or hollow cone nozzles in the 0.40 to 8.00 GPH range.

Installation Notes

Oil burner nozzle service should be performed by a licensed oil burner technician. Shut down and de-energize the burner, and close the fuel supply valve before removing the existing nozzle. Use the correct nozzle wrench to avoid damaging the nozzle adapter; do not overtighten. Always verify combustion performance with a flue gas analyzer after nozzle replacement to confirm proper CO2, stack temperature, and smoke number readings.