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Home > Pressure Flow Table
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Pressure Flow
Through Orifices in SCCM |
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Size
of
Orifice |
Pressure
(psig) |
| 5 |
10 |
15 |
20 |
25 |
30 |
| .0004" |
1.00
|
1.25
|
1.75
|
2.35
|
2.75
|
3.20
|
| .0008" |
2.66
|
4.50
|
6.00
|
7.75
|
8.75
|
10.0
|
| .0010" |
5.0
|
8.0
|
11.0
|
13.0
|
16.0
|
18.0
|
| .0012" |
7.0
|
11.5
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17.0
|
21.0
|
25.0
|
29.0
|
| .0016" |
13.0
|
20.0
|
25.0
|
32.0
|
40.0
|
45.0
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| .0018" |
14.5
|
25.0
|
35.0
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39.5
|
49.0
|
60.0
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| .0020" |
25.6
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40.0
|
50.0
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60.0
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70.0
|
80.0
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| .0025" |
37.0
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55.0
|
72.0
|
85.0
|
100.0
|
120.0
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| .0030" |
48.0
|
75.0
|
92.0
|
109.0
|
128.0
|
150.0
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| .0035" |
69.0
|
100.0
|
130.0
|
156.0
|
185.0
|
210.0
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| .0040" |
90.0
|
135.0
|
165.0
|
200.0
|
230.0
|
280.0
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| .0060" |
200.0
|
310.0
|
375.0
|
450.0
|
530.0
|
590.0
|
| .0080" |
370.0
|
570.0
|
694.0
|
810.0
|
936.0
|
1100
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| .0100" |
550.0
|
775.0
|
1000
|
1190
|
1390
|
1595
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| .0120" |
875.0
|
1200
|
1490
|
1790
|
2000
|
2400
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Size of
Orifice |
Pressure (psig) |
| 40 |
50 |
60 |
70 |
80 |
100 |
| .0004" |
4.18 |
5.14 |
6.00 |
7.00 |
8.00 |
10.00 |
| .0008" |
12.5 |
15.0 |
18.0 |
21.0 |
24.5 |
29.0 |
| .0010" |
24.0 |
28.0 |
32.0 |
37.0 |
43.0 |
50.0 |
| .0012" |
40.0 |
50.0 |
60.0 |
68.0 |
77.0 |
100.0 |
| .0016" |
52.0 |
65.0 |
75.0 |
83.0 |
96.0 |
120.0 |
| .0018" |
75.0 |
95.0 |
120.0 |
135.0 |
155.0 |
200.0 |
| .0020" |
95.0 |
115.0 |
140.0 |
155.0 |
172.0 |
220.0 |
| .0025" |
145.0 |
170.0 |
200.0 |
220.0 |
250.0 |
310.0 |
| .0030" |
180.0 |
215.0 |
250.0 |
280.0 |
313.0 |
400.0 |
| .0035" |
260.0 |
315.0 |
360.0 |
400.0 |
455.0 |
575.0 |
| .0040" |
330.0 |
390.0 |
450.0 |
510.0 |
583.0 |
745.0 |
| .0060" |
750.0 |
875.0 |
1000 |
1150 |
1275 |
1600 |
| .0080" |
1320 |
1550 |
1800 |
2000 |
2222 |
2700 |
| .0100" |
1900 |
2200 |
2600 |
2900 |
3300 |
4000 |
| .0120" |
2900 |
3500 |
4000 |
4500 |
5000 |
6000 |
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Pressure Flow Through Orifices in SCFM |
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Size
of
Orifice (In.) |
Pressure
(psig) |
| 2 |
5 |
10 |
15 |
20 |
25 |
30 |
35 |
40 |
| 1/64" |
.024
|
.040 |
.061 |
.079 |
.096 |
.113 |
.129 |
.145 |
.161 |
| 1/32" |
.098
|
.161 |
.243 |
.319 |
.384 |
.451 |
.516 |
.581 |
.645 |
| 3/64" |
.22
|
.363 |
.547 |
.71 |
.86 |
1.01 |
1.16 |
1.31 |
1.45 |
| 1/16" |
.391
|
.645 |
.972 |
1.26 |
1.54 |
1.80 |
2.07 |
2.32 |
2.58 |
| 3/32" |
.881
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1.45 |
2.19 |
2.84 |
3.46 |
4.06 |
4.65 |
5.23 |
5.81 |
| 1/8" |
1.57
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2.58 |
3.89 |
5.05 |
6.15 |
7.21 |
8.26 |
9.30 |
10.3 |
| 3/16" |
3.52
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5.80 |
8.75 |
11.4 |
13.8 |
16.2 |
18.6 |
20.9 |
23.2 |
| 1/4" |
6.26
|
10.3 |
15.6 |
20.2 |
24.6 |
28.9 |
33.0 |
37.2 |
41.3 |
| 3/8" |
14.1
|
23.2 |
35.0 |
45.4 |
55.3 |
64.9 |
74.4 |
83.7 |
92.9 |
| 1/2" |
25.1
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41.3 |
62.2 |
80.8 |
98.4 |
115 |
132 |
149 |
165 |
| 5/8" |
39.1
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64.5 |
97.2 |
126 |
154 |
180 |
207 |
232 |
258 |
| 3/4" |
56.4
|
92.9 |
140 |
182 |
221 |
260 |
297 |
335 |
372 |
| 7/8" |
76.7
|
126 |
191 |
247 |
301 |
354 |
405 |
455 |
506 |
Size of
Orifice (In.) |
Pressure (psig) |
| 45 |
50 |
60 |
70 |
80 |
90 |
100 |
125 |
| 1/64" |
.177 |
.193 |
.225 |
.256 |
.287 |
.319 |
.350 |
.428 |
| 1/32" |
.709 |
.772 |
.898 |
1.02 |
1.15 |
1.27 |
1.40 |
1.71 |
| 3/64" |
1.59 |
1.74 |
2.02 |
2.30 |
2.59 |
2.87 |
3.15 |
3.85 |
| 1/16" |
2.84 |
3.09 |
3.59 |
4.10 |
4.60 |
5.10 |
5.60 |
6.85 |
| 3/32" |
6.38 |
6.95 |
8.09 |
9.22 |
10.3 |
11.5 |
12.6 |
15.4 |
| 1/8" |
11.3 |
12.4 |
14.4 |
16.4 |
18.4 |
20.4 |
22.4 |
27.4 |
| 3/16" |
25.5 |
27.8 |
32.3 |
36.9 |
41.4 |
45.9 |
50.4 |
61.6 |
| 1/4" |
45.4 |
49.4 |
57.5 |
65.5 |
73.6 |
81.6 |
89.6 |
110 |
| 3/8" |
102 |
111 |
129 |
147 |
166 |
184 |
202 |
246 |
| 1/2" |
181 |
198 |
230 |
262 |
294 |
326 |
358 |
438 |
| 5/8" |
284 |
309 |
359 |
410 |
460 |
510 |
560 |
685 |
| 3/4" |
408 |
445 |
518 |
590 |
662 |
734 |
806 |
986 |
| 7/8" |
556 |
605 |
704 |
803 |
901 |
999 |
1097 |
1342 |
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