Table 1.
Spray-gun flow rate in gallons per minute for orifice discs of various sizes.
Orifice disc no.
Pressure (psi)
50
100
200
400
600
800
2
.3
.4
.5
.7
.9
1.0
4
.6
.9
1.2
1.6
2.1
2.4
6
1.3
1.8
2.5
3.4
4.1
4.6
8
2.1
3.0
4.3
6.0
7.1
8.0
10
3.1
4.4
6.2
8.7
10.5
12.0
12
4.4
6.2
8.7
12.0
14.2
16.0
16
7.4
10.0
13.8
18.9
22.6
25.8