Name: Monarch Oil nozzle 0.65GPH / 45R
Brand: Monarch
SKU: 0.65GPH / 45R

Flow rate

0.65 GPH

Spray angle

45 °

Spray pattern

Description

This is a Monarch oil nozzle with a 0.65 GPH flow rate, a 45° spray angle, and an R spray pattern. It is used in oil-fired burners and boilers to atomise fuel oil into a fine spray for combustion. The 0.65 GPH rating defines the volume of oil delivered per hour at the rated pressure. The 45° angle sets the width of the spray cone, and the R pattern denotes a solid or semi-solid spray shape. The nozzle is identified by the SKU 0.65GPH / 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 manufacturer's specification. The mounting form must also match: nozzles are commonly secured by a threaded body or a flange, and the seat and thread size must correspond to the nozzle adapter. Before ordering, compare the existing nozzle's stamping and the burner's data plate to confirm the required GPH, angle, and pattern. The pump pressure stated for the appliance must also be observed, as flow rate is rated at a specific pressure.

Signs of failure

Nozzles of this kind can clog, wear at the orifice, or develop a distorted spray pattern over time. When this happens, the burner may produce a smoky flame, fail to ignite, pulsate, or show a rise in fuel consumption. A fitter should check for a blocked strainer, inspect the spray pattern on a test stand, and compare the nozzle's rated flow and angle against the burner specification.