Tips
The orifice size of the nozzle determines the operating pressure of your machine. A
The smaller the orifice, the greater the restriction of water flowing through the machine. This causes the pressure to increase.
Use a Larger orifice nozzle and you will will reduce operating pressure.
Choosing a nozzle with too small of an orifice will limit water flow and possibly create an excessive use of the unloader on the Pressure Washer.
Use the table below to select the properly sized nozzle for your machine. Determine the nozzle size by matching the operating pressure (PSI) of your machine to the gallons per minute (GPM).
| Spray Angle Degree |
Distance from the nozzle orifice | Spray Pattern |
Spray Angle |
% Impact/Sq.In. of Theoretical Impact* | ||||||||||
| .. |
2in
|
4in
|
6in
|
8in
|
10in
|
12in
|
15in
|
18in
|
24in
|
30in
|
36in
|
FAN
|
15
|
30%
|
|
15
|
0.5in
|
1.1in
|
1.6in
|
2.1in
|
2.6in
|
3.2in
|
3.9in
|
4.7in
|
6.3in
|
7.9in
|
9.5in
|
FAN
|
25
|
18%
|
|
25
|
0.9in
|
1.8in
|
2.7in
|
3.5in
|
4.4in
|
5.3in
|
6.6in
|
8in
|
10.6in
|
13.3in
|
15.9in
|
FAN
|
40
|
12%
|
|
40
|
1.5in
|
2.9in
|
4.4in
|
5.8in
|
7.3in
|
8.7in
|
10.9in
|
13.1in
|
17.5in
|
21.8in
|
26.2in
|
FAN
|
50
|
10%
|
|
50
|
1.9in
|
3.7in
|
5.6in
|
7.5in
|
9.3in
|
11.2in
|
14in
|
16.8in
|
22.4in
|
28in
|
33.6in
|
FAN
|
65
|
7%
|
|
65
|
2.5in
|
5.1in
|
7.6in
|
10.2in
|
12.7in
|
15.3in
|
19.2in
|
22.9in
|
30.5in
|
38.2in
|
45.8in
|
|||
Surface Cleaner Nozzle Recommendation (2 to 5 nozzles)
| Pump Capacity |
Quantity of Nozzles / Pressure in psi: | ||||
| Size | 2 | 3 | 4 | 5 | |
| Nozzles | Nozzles | Nozzles | Nozzles | ||
| 4 GPM | 2 | 4000 | 1800 | 1000 | 700 |
| 2.5 | 2200 | 1000 | 600 | - | |
| 3 | 1900 | 750 | - | - | |
| 4 | 1000 | - | - | - | |
| 5 GPM | 2 | - | 2800 | 1600 | 1000 |
| 2.5 | 4000 | 1600 | 900 | 600 | |
| 3 | 2700 | 1300 | 600 | - | |
| 4 | 1500 | 650 | - | - | |
| 5 | 1000 | - | - | - | |
| 6 GPM | 2 | - | 4400 | 2250 | 1600 |
| 2.5 | - | 2200 | 1300 | 900 | |
| 3 | 4000 | 1900 | 1000 | 650 | |
| 4 | 2400 | 1000 | 550 | - | |
| 5 | 1400 | 650 | - | - | |
| 6 | 1000 | 450 | - | - | |
| 8 GPM | 2 | - | - | 4000 | 2500 |
| 2.5 | - | - | 2200 | 1500 | |
| 3 | - | 3200 | 1900 | 1100 | |
| 4 | 4000 | 1800 | 1000 | 600 | |
| 5 | 2500 | 1100 | 650 | - | |
| 6 | 1800 | 800 | - | - | |
| 7 | 1300 | - | - | - | |
| 10 GPM | 2 | - | - | - | 4000 |
| 2.5 | - | - | 4000 | 2200 | |
| 3 | - | - | 2750 | 1800 | |
| 4 | - | 2800 | 1500 | 1000 | |
| 5 | 4000 | 1700 | 1000 | 650 | |
| 6 | 2700 | 1300 | 700 | - | |
| 7 | 2000 | 900 | 500 | - | |
| 8 | 1500 | 650 | - | - | |
| 9 | 1200 | - | - | - | |