Pipe

Size

Liquid Flow Rate For A 600 Feet Per Minute Velocity - (GPM)

Schedule 40

Schedule 80

Schedule 160

Dbl. Extra Hvy.

1/8

1.77

1.12

¾

¾

1/4

3.24

2.24

¾

¾

3/8

5.95

4.38

¾

¾

1/2

9.47

7.29

5.31

1.56

3/4

16.6

13.5

9.22

4.61

1

26.9

22.4

16.3

8.79

1 1/4

46.6

40.0

32.9

19.6

1 1/2

63.4

55.0

43.8

29.6

2

104.5

92.0

69.8

55.3

2 1/2

149.2

132.0

110.5

76.7

3

230.3

205.8

168.5

129.4

3 1/2

308.0

276.9

¾

182.1

4

396.6

358.2

289.2

243.1

5

623.2

566.8

455.1

403.9

6

900.0

812.1

658.9

586.7

8

1558.5

1422.5

1135.8

1156.4

10

2456.5

2238.0

1767.8

¾

12

3486.9

3166.4

2508.7

¾