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Nozzle orifice size chart

Use this chart to choose the right orifice size for your machine. To small of an orifice will cause damage. If there is no exact match, choose the next high size. The 1622TS and the 1122TS use a 4.5 orifice.

PSI - Pounds per square inch  
 
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
 Nozzle Orifice Size
G
1
1.2
1.4
1.6
1.7
1.9
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
 2
A
L
1.3
1.6
1.8
2
2.2
2.3
2.5
2.7
2.8
2.9
3.1
3.2
3.3
3.4
3.5
 2.5
L
O
1.5
1.8
2.1
2.4
2.6
2.8
3
3.2
3.4
3.5
3.7
3.8
4
4.1
4.2
 3
N
S
1.8
2.2
2.5
2.8
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
4.6
4.8
4.9
 3.5
 
P
2
2.5
2.8
3.2
3.5
3.7
4
4.2
4.5
4.7
4.9
5.1
5.3
5.5
5.7
 4
E
R
2.3
2.8
3.2
3.6
3.9
4.2
4.5
4.8
5
5.3
5.5
5.7
6
6.2
6.4
 4.5
 
M
2.5
3.1
3.5
4
4.3
4.7
5
5.3
5.6
5.9
6.1
6.4
6.6
6.8
7.1
 5
I
N
2.8
3.4
3.9
4.3
4.8
5.1
5.5
5.8
6.2
6.4
6.7
7
7.3
7.5
7.8
 5.5
U
T
3
3.7
4.2
4.7
5.2
5.6
6
6.4
6.7
7
7.3
7.6
7.9
8.2
8.5
 6
E
 
3.3
4
4.6
5.1
5.6
6.1
6.5
6.9
7.3
7.6
8
8.3
8.6
8.9
9.2
 6.5
 
 
3.5
4.3
4.9
5.5
6.1
6.5
7
7.4
7.8
8.2
8.6
8.9
9.3
9.6
9.9
 7
 
 
3.8
4.6
5.3
5.9
6.5
7
7.5
8
8.4
8.8
9.2
9.6
9.9
10.3
10.6
 7.5
 
 
4
4.9
5.7
6.3
6.9
7.5
8
8.5
8.9
9.4
9.8
10.2
10.6
11
11.3
 8
 
  4.25 5.21 6.01 6.72 7.36 7.95 8.5 9.02 9.5 - - - - - - 8.5
 
 
4.5
5.5
6.4
7.1
7.8
8.4
9
9.6
10.1
10.6
11
11.5
11.9
12.3
12.7
 9
 
  4.75 5.82 6.72 7.51 8.23 8.89 9.5 10.08 10.62 - - - - - - 9.5
 
 
5
6.1
7.1
7.9
8.7
9.4
10
10.6
11.2
11.7
12.2
12.7
13.2
13.7
14.1
 10
 
  5.5 6.74 7.78 8.7 9.53 10.29 11 11.67 12.3 - - - - - - 11
 
 
6
7.3
8.5
9.5
10.4
11.2
12
12.7
13.4
14.1
14.7
15.3
15.9
16.4
17
 12