Name: Monarch Oil nozzle 0.50GPH / 45R
Brand: Monarch
SKU: 0.50GPH / 45R

Flow rate

0.5 GPH

Spray angle

45 °

Spray pattern

Description

This is a Monarch oil nozzle with a 0.5 GPH flow rate, a 45° spray angle, and an R spray pattern. It is used in oil-fired burners and boilers to atomize fuel oil into a fine spray for combustion. The 0.5 GPH rating defines the volume of oil delivered per hour at the nozzle's rated pressure. The 45° angle sets the width of the spray cone, and the R pattern denotes a solid or semi-solid spray distribution. It is identified by SKU 0.50GPH / 45R.

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 old nozzle before ordering. The nozzle is installed finger-tight into the adapter, then tightened according to the burner maker's specification, with care not to damage the orifice or strainer.

Signs of failure

Nozzles of this kind commonly fail by orifice wear, clogging from fuel contaminants, or a damaged strainer, which changes the spray shape and flow rate. The equipment may then show a smoky flame, poor ignition, pulsation, or a rise in fuel consumption. Checking the spray pattern, the strainer, and the nozzle seat, and comparing the delivered flow rate against the rated value, helps identify a worn or blocked nozzle.