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The Delavan 1.20-45-B is a Type B solid cone oil burner nozzle designed for residential heating applications. It delivers a flow rate of 1.2 gallons per hour at a spray angle of 45 degrees. HVAC technicians and oil burner service professionals rely on this nozzle for consistent performance during seasonal tune-ups, combustion checks, and burner replacements. The solid cone spray pattern distributes fuel droplets fairly evenly throughout the complete cone. This uniform distribution supports smooth ignition and efficient combustion, especially in larger residential oil-fired burners. The spray pattern becomes progressively more hollow at higher flow rates, particularly above 8.00 GPH, but at 1.2 GPH it maintains a reliable and repeatable cone. The brass body provides durability and corrosion resistance in the fuel oil environment. The steel orifice disc controls the precise flow rate and spray geometry that clean combustion depends on. Proper nozzle selection directly affects fuel economy, heat output, and flue emissions. Choosing the correct flow rate and spray angle for the burner head and combustion chamber is a standard part of any professional oil burner service call. The 45-degree angle suits a wide range of residential combustion chambers with shorter flame retention requirements. This nozzle meets ISO 9001 quality standards, giving technicians confidence in part-to-part consistency. It operates at a rated pressure of 100 PSI and is specified for use at 80 degrees Fahrenheit. The Delavan 1.20-45-B is a direct replacement nozzle for oil-fired boilers, oil-fired furnaces, and water heaters using compatible Delavan B-type nozzle sizing. Keeping a stock of properly rated nozzles on the service truck ensures fast, accurate repairs and minimizes equipment downtime for homeowners.
The Delavan 1.20-45-B delivers reliable, consistent combustion performance in residential oil burner applications. Its solid cone spray geometry and ISO 9001-rated construction make it a dependable choice for HVAC and oil burner service professionals.
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