Velocity and Flow Capacity of Oil Schedule 80 Pipe

Fluid Flow Table of Contents
Hydraulic and Pneumatic Knowledge

Fluid Power Equipment

Velocity and Flow Capacity of Oil Schedule 80 Pipe

V =(GPM x .3208) /A

GPM = (V x A)/0.3208

V = Oil velocity in feet per second
GPM = flow in gallons per minute (GPM)
A = Inside area of pipe in square inches (in2).

Schedule 80 Pipe Flow Capacity
Units - > GPM (Gallons per Minute)
Pipe NPT
Nom. Size
2
Ft/Sec.
4
Ft/Sec.
10
Ft/Sec.
15
Ft/Sec.
20
Ft/Sec.
30
Ft/Sec.
1/8
0.23
0.45
1.13
1.70
2.26
3.40
1/4
0.45
0.89
2.23
3.35
4.47
6.70
3/8
0.88
1.75
4.38
6.57
8.76
13.14
1/2
1.46
2.92
7.30
10.95
14.60
21.90
3/4
2.70
5.39
13.48
20.22
26.96
40.44
1
4.48
8.97
22.42
33.63
44.84
67.26
1-1/4
8.00
15.99
39.99
59.98
79.97
119.96
1-1/2
11.02
22.03
55.08
82.63
110.17
165.25
2
18.41
36.82
92.04
138.07
184.09
276.13
2-1/2
26.42
52.84
132.11
198.17
264.22
396.33
3
41.18
82.36
205.89
308.84
411.78
617.67

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