Name: Monarch Oil nozzle 28.00GPH / 45HO
Brand: Monarch
SKU: 28.00GPH / 45HO

Flow rate

28 GPH

Spray angle

45 °

Spray pattern

Description

The Monarch Oil nozzle 28.00GPH / 45HO is an oil nozzle with a flow rate of 28 GPH, a 45 ° spray angle, and an HO spray pattern. It is used to atomise fuel oil into a spray for combustion in oil-fired burners and boilers. The 45 ° angle defines the cone width of the spray, while the HO pattern designates the distribution of fuel within that cone. The 28 GPH rating states the volume of oil the nozzle passes per hour at its rated pressure.

Nozzle selection chart

Flow rate	kg/h	45°	60°	80°
0.40	1.27	R		R
0.45	1.43	R
0.50	1.59	R	R
0.55	1.75	R
0.60	1.91	R
0.65	2.07	R		R
0.75	2.38	R	R
0.85	2.70	R	R
1.00	3.18	R	R	R
1.10	3.50	R
1.20	3.82	R
1.25	3.97	R	R	R
1.35	4.29	R	R
1.50	4.77	R	R	R
1.65	5.25	R	R
1.75	5.56	R
2.00	6.36	R	HO R	PLP R
2.25	7.15	PLP R	PLP R	R
2.50	7.95	PLP R	HO PLP R
3.00	9.54	PLP R	HO PLP R
3.50	11.13	HO PLP R	HO R
4.00	12.72	PLP	BPS PLP
4.50	14.31	PLP	BPS HO PLP	PLP
5.00	15.90	HO PLP	BPS PLP
5.50	17.49	PLP	BPS HO
6.00	19.08	PLP	BPS PLP
6.50	20.67	PLP	BPS PLP
7.00	22.26	PLP	BPS HO PLP
7.50	23.85	PLP	BPS HO
8.00	25.44	PLP	BPS PLP
8.50	27.02	HO PLP	PLP
9.00	28.61	HO PLP	BPS HO	PLP
9.50	30.20	HO PLP	BPS PLP
10.00	31.79		PLP
10.50	33.38	HO PLP	PLP	PLP
12.00	38.15	HO PLP	HO PLP
13.00	41.33	PLP	PLP
13.50	42.92	HO PLP
14.00	44.51	PLP	PLP
15.00	47.69	PLP	HO PLP
15.50	49.28	PLP	PLP
16.00	50.87	PLP
17.00	54.05	PLP	PLP
17.50	55.64	HO
18.00	57.23		PLP
19.50	62.00	HO PLP	PLP
20.00	63.59		PLP
21.50	68.36	PLP	PLP
24.00	76.31	PLP
28.00	89.02	HO PLP
30.00	95.38	HO		PLP
40.00	127.18		PLP	PLP
45.00	143.07			PLP
50.00	158.97			PLP
55.00	174.87		PLP
60.00	190.76			PLP
70.00	222.56			PLP
80.00	254.35			PLP
90.00	286.15			PLP
100.00	317.94			PLP

Choosing and fitting

Nozzles of this type are selected by matching the flow rate, spray angle, and spray pattern to the burner's requirements, and by confirming the thread and body dimensions fit the nozzle adapter. Mounting forms vary by burner design, so the seat, thread size, and overall length must be compared with the part being replaced before ordering. The nozzle is installed in the burner's nozzle adapter, with the correct tightening torque and without damaging the orifice or filter screen.

Signs of failure

Nozzles of this kind commonly fail through orifice wear, clogging, or a damaged filter screen, which changes the spray pattern and flow rate. On the equipment this appears as poor combustion, smoke, soot deposits, unstable flame, or difficulty maintaining the set firing rate. Checks include the nozzle screen and orifice for debris, the spray pattern for distortion, and the pump pressure, since incorrect pressure also alters the delivered flow.