Delavan 1.25-70-b 1.25 Gph 70 Degree Type B Solid Cone Oil Burner Nozzle

Product Description

The Delavan 1.25-70-b is a Type B Solid Cone oil burner nozzle rated at 1.25 GPH with a 70-degree spray angle. It is designed for residential oil-fired heating systems and delivers reliable, efficient combustion performance. HVAC technicians and oil burner service professionals rely on this style of nozzle to keep forced-air furnaces, boilers, and space heaters running cleanly and efficiently. The solid cone spray pattern distributes fuel droplets fairly uniformly across the full spray pattern at lower flow rates. This uniform distribution supports smooth ignition and consistent flame quality, which is especially important during cold-start conditions. At higher flow rates, particularly above 8.00 GPH, the spray pattern becomes progressively more hollow toward the center, but at 1.25 GPH this nozzle stays within its optimal operating range. The brass body provides corrosion resistance and durability in the demanding environment of an oil burner head. The steel orifice disc maintains a precise opening for accurate fuel metering, which directly affects combustion efficiency and fuel economy. A sintered filter is integrated into the nozzle to trap fine particulates before they can clog the orifice, extending service life and reducing callback rates. This nozzle is rated for operation at 100 PSI and a temperature of 80 degrees Fahrenheit, which aligns with standard residential oil burner pump pressures. It meets ISO 9001 quality standards, giving service technicians confidence in dimensional consistency and flow accuracy from one nozzle to the next. The 70-degree spray angle is a common choice for residential burner applications where the combustion chamber geometry requires a moderately wide flame pattern. Replacing an oil burner nozzle at each annual tune-up is standard practice, and this Delavan nozzle is a direct replacement for systems calling for a 1.25 GPH, 70-degree, Type B solid cone configuration.

• Type B Solid Cone spray pattern distributes droplets uniformly for smooth ignition and efficient combustion
• Brass body and steel orifice disc construction for durability and precise fuel metering
• Integrated sintered filter protects the orifice from particulate contamination

Product Highlights

The Delavan 1.25-70-b oil burner nozzle delivers consistent 1.25 GPH fuel flow at a 70-degree spray angle, making it a reliable replacement nozzle for residential oil-fired heating equipment. Its brass and steel construction and sintered filtration support accurate combustion and long service intervals.

Product Information

Standard Information

• Brand: DELAVAN
• Manufacturer Part Number: 1.25-70-b

Technical Specifications

• Product Type: Oil Burner Nozzle
• Nozzle Type: Type B, Solid Cone
• Flow Rate: 1.25 GPH
• Spray Angle: 70 Degree
• Pressure Rating: 100 PSI
• Temperature Rating: 80 Degrees F
• Body Material: Brass
• Orifice Disc Material: Steel
• Filter Type: Sintered
• Application: Residential
• Applicable Standard: ISO 9001