Product Description
The Delavan 0.70-80-b is an oil burner nozzle designed for use in residential and commercial oil-fired heating systems. It features a brass body with a stainless steel hollow orifice, which provides consistent atomization and long-lasting durability in demanding combustion environments. HVAC technicians and oil burner service professionals rely on nozzles like this one to ensure clean, efficient fuel delivery in boilers, furnaces, and other oil-burning appliances. The nozzle delivers a flow rate of 0.75 GPH at 100 PSI and produces an 80-degree spray angle using a Type B hollow cone spray pattern. Type B nozzles distribute fuel droplets uniformly throughout the full spray pattern at lower flow rates, which supports smooth ignition and stable combustion. At higher flow rates, particularly above 8.00 GPH, the pattern becomes progressively more hollow toward the center, but at 0.75 GPH, the distribution remains even and well-suited for smaller to mid-sized burners. The hollow cone pattern is especially effective in burner configurations where the flame retention head or air turbulator benefits from fuel concentrated at the outer edges of the spray cone. This design promotes thorough mixing of fuel and air, which supports more complete combustion and reduced soot buildup in heat exchangers and flue passages. Proper nozzle selection directly impacts combustion efficiency, so matching the flow rate, spray angle, and pattern type to the burner manufacturer specifications is essential. The Delavan 0.70-80-b is a common replacement nozzle for oil-fired boiler and furnace service calls. It fits standard oil burner nozzle adapters and is compatible with a wide range of Beckett, Carlin, Wayne, and Riello-style burner assemblies. HVAC service techs should replace oil burner nozzles annually during routine tune-ups to maintain peak efficiency and prevent combustion issues.
- Brass body construction with a stainless steel hollow orifice for reliable atomization and corrosion resistance
- Type B hollow cone spray pattern distributes droplets evenly across the full pattern at 0.75 GPH flow rate and 80-degree angle
- Designed for oil-fired boilers, furnaces, and other oil-burning appliances using standard burner nozzle adapters
Product Highlights
The Delavan 0.70-80-b oil burner nozzle delivers precise fuel atomization at 0.75 GPH with an 80-degree Type B hollow cone pattern, making it a reliable replacement part for annual oil burner maintenance and service.
Product Information
Standard Information
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Brand: DELAVAN
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Manufacturer Part Number: 0.70-80-b
Technical Specifications
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Flow Rate: 0.75 GPH at 100 PSI
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Spray Angle: 80 degrees
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Spray Pattern Type: Type B Hollow Cone
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Body Material: Brass
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Orifice Material: Stainless Steel
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Application: Oil-fired boilers, furnaces, and oil-burning appliances
