Dysza Monarch 9.00GPH, 45HO

The Monarch 9.00GPH, 45HO nozzle is an oil nozzle for use in oil burners. Parts of this type atomise the fuel into a fine cone so that it can burn completely. The nozzle sits at the end of the burner’s blast tube, receiving pressurised oil from the oil pump via the solenoid valve. It is a precision consumable: the flow rate, spray angle and spray pattern together determine how the flame sits in the combustion head. Such nozzles are selected by flow rate (given here as 9.00 GPH), spray angle and pattern (the “45HO” designation in the name refers to these two parameters, but the exact meaning of each character should be checked against the manufacturer’s coding system). The thread size must also match the burner’s nozzle holder. All three parameters – rate, angle and pattern – must match the burner data plate. Using a nozzle with the correct flow rate but the wrong pattern can cause sooting, flame pulsation or unstable ignition. When replacing an oil nozzle, always confirm the original specification from the burner data plate or the manufacturer’s documentation. Nozzles are not interchangeable by flow rate alone. Cleanliness is critical: any debris in the nozzle orifice will distort the spray pattern. Handle the nozzle by the hexagonal body, not the tip.