Monarch Oil nozzle 0986230-8

The Monarch Oil nozzle 0986230-8 is a precision consumable component designed to atomize fuel oil into a fine spray for combustion. It has a capacity of 8 gallons per hour (GPH) and a spray angle of 60 degrees. The spray pattern is PLP, which indicates a semi-solid pattern that becomes more hollow at larger flow rates. This nozzle is used in oil burners to ensure efficient fuel combustion.

When selecting a replacement oil nozzle of this type, the flow rate (in GPH at the reference pressure), spray angle, and spray pattern must match the burner manufacturer's data plate. The pattern and angle together determine the flame shape in the combustion head. Incorrect matching can cause sooting, pulsation, or unstable ignition. Installation requires isolating the burner from power, depressurizing the fuel line, cleaning the nozzle holder seat, and torquing to specification to avoid distortion.

Oil nozzles of this kind can fail due to clogging, wear, or overtightening, leading to improper atomization. Symptoms include sooting, pulsation, unstable ignition, or incomplete combustion. Check the nozzle for blockages or damage, and verify that the flow rate, angle, and pattern match the burner's requirements.