Name: Monarch Oil nozzle 1.50GPH / 60R
Brand: Monarch
SKU: 1.50GPH / 60R

Flow rate

1.5 GPH

Spray angle

60 °

Spray pattern

Description

This is a Monarch oil nozzle with a flow rate of 1.5 GPH, a 60 ° spray angle, and an R spray pattern. It is used in oil burners to atomise fuel oil into a fine spray for combustion. The 1.5 GPH rating defines the volume of oil delivered per hour at the nozzle's rated pressure. The 60 ° angle sets the width of the spray cone, and the R pattern denotes a solid or semi-solid spray shape. The SKU 1.50GPH / 60R identifies this specific combination of flow rate, angle, and pattern.

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: most oil nozzles use a standard threaded body, but the thread size and seating face can vary between burner models. Before ordering, compare the existing nozzle's markings and measure the thread and overall length against the replacement. The pump pressure stated for the appliance must correspond to the nozzle's rated flow, since flow rate changes with pressure.

Signs of failure

Oil nozzles of this kind commonly fail by clogging, wear of the orifice, or a damaged filter screen. When clogged or worn, the burner may produce a poor flame, smoke, soot, or fail to ignite, and combustion can become unstable. A distorted spray pattern or reduced flow often leads to delayed ignition or pulsating firing. Check the nozzle for blockage, wear, and correct spray shape, and verify the pump pressure and filter before replacing it.