The .85X70W1 Oil Burner Nozzle is a high-performance Type W nozzle designed for efficient oil-burning systems. With a precise Nozzle GPH of 0.85 and a Nozzle Spray Angle of 70°, this nozzle provides optimal spray distribution. It's a perfect replacement for type A or B nozzles in the range of 0.4 to 1.2 GPH in 70° or 80° spray applications, effectively reducing specific burner problems. Compatible with various models and brands, this nozzle can be expertly installed in minutes with common tools.