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The Delavan 1.75-45-b is a Type B solid cone oil burner nozzle designed for residential heating applications. It delivers a flow rate of 1.75 gallons per hour at a standard operating pressure of 100 PSI. The 45-degree spray angle produces a solid cone pattern that distributes fuel oil evenly across the combustion chamber. This nozzle is a go-to component for HVAC technicians and oil furnace service professionals who need a reliable, precision-engineered atomizing nozzle for annual tune-ups, nozzle replacements, or new burner installations. The Delavan brand is widely recognized in the heating industry for consistent atomization quality, which directly affects combustion efficiency and heat output. A well-matched nozzle ensures proper fuel-to-air ratio, clean ignition, and reduced carbon buildup in the combustion chamber. The 1.75-45-b features a brass body and a steel orifice disc, giving it the durability and corrosion resistance needed for long-term use in oil-fired furnaces and boilers. The integrated sintered filter screens out particulates that could clog the orifice and cause misfires or incomplete combustion. This nozzle meets ISO 9001 quality standards, confirming consistent manufacturing tolerances across production batches. For service technicians, that consistency means predictable spray performance on every installation. The solid cone spray pattern is particularly effective in residential oil burners where a uniform fuel distribution is needed for stable flame and complete combustion. Whether you are servicing a Beckett, Riello, Carlin, or Wayne burner, the Delavan 1.75-45-b is a standard fit for most residential oil heating equipment requiring a 1.75 GPH, 45-degree, Type B nozzle.
The Delavan 1.75-45-b delivers precise 1.75 GPH fuel atomization at a 45-degree solid cone angle, meeting ISO 9001 standards for reliable residential oil burner performance.
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