Product Description
The Delavan 0.85-70-a is a Type A hollow cone oil burner nozzle designed for residential and light commercial oil-fired heating systems. It delivers a flow rate of 0.85 gallons per hour at a 70-degree spray angle. HVAC technicians and burner service professionals rely on this nozzle for accurate fuel delivery in oil furnaces, boilers, and water heaters. The brass body provides durability and corrosion resistance in high-heat environments. The stainless-steel hollow orifice maintains a precise spray pattern over extended service cycles. Type A nozzles produce a hollow cone spray pattern, meaning droplets are concentrated along the outer edge of the cone rather than throughout the entire cone volume. This distribution pattern promotes clean ignition and low-noise combustion, which is especially important in residential heating applications where combustion quality directly affects efficiency and comfort. The 70-degree angle suits burner configurations that require a wider spray pattern for proper air-fuel mixing. This nozzle is suited for oil burners with throughputs up to 2.00 GPH. Delavan uses a precision machining process to maintain consistent spray angles and optional spray uniformity across production runs. The distributor features shorter tangential slots to reduce the risk of plugging from debris or fuel contaminants. The aerodynamic body configuration supports stable flame development. Rolled threads on the body prevent metal chips and burrs that could contaminate the fuel system or cause improper seating. A sintered filter is built in for maximum particulate protection, helping extend the service life of the nozzle and protecting downstream components. This is a direct boiler and furnace replacement part compatible with oil-burning appliances. It meets ISO 9001 quality standards, confirming consistent manufacturing tolerances.
- Hollow cone spray pattern concentrates droplets on the outer edge of the cone for reliable ignition and quiet combustion
- Sintered filter provides built-in particulate protection to safeguard the fuel system
- Rolled threads and aerodynamic brass body prevent metal contamination and support stable installation
Product Highlights
The Delavan 0.85-70-a delivers precise, consistent fuel atomization at 0.85 GPH and 70 degrees, making it a dependable replacement nozzle for oil-fired boilers and furnaces. ISO 9001 certified manufacturing ensures reliable spray performance on every installation.
Product Information
Standard Information
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Brand: DELAVAN
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Manufacturer Part Number: 0.85-70-a
Technical Specifications
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Flow Rate: 0.85 GPH
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Spray Angle: 70 degrees
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Nozzle Type: A (Hollow Cone)
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Maximum Throughput: 2.00 GPH
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Body Material: Brass
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Orifice Material: Stainless Steel
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Filter Type: Sintered
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Quality Certification: ISO 9001
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Application: Oil-fired boilers, furnaces, and water heaters
