Water Flow Through Schedule 40 Steel Pipes

Discharge

Pressure Drop per 100 Feet and Velocity in Schedule 40 Pipe 60 Degrees (Fahrenheit) Water

Gallons Per Minute

Cubic Feet Per Minute

Velocity (Ft. per Second)

Pressure Drop (PSI)

Velocity (Ft. per Second)

Pressure Drop (PSI)

Velocity (Ft. per Second)

Pressure Drop (PSI)

Velocity (Ft. per Second)

Pressure Drop (PSI)

Velocity (Ft. per Second)

Pressure Drop (PSI)

Velocity (Ft. per Second)

Pressure Drop (PSI)

Velocity (Ft. per Second)

Pressure Drop (PSI)

Velocity (Ft. per Second)

Pressure Drop (PSI)

1/8"

1/4"

0.2

0.02676

1.13

1.86

0.616

0.359

3/8"

1/2"

0.3

0.04008

1.69

4.22

0.924

0.903

0.504

0.159

0.317

0.061

0.4

0.05346

2.26

6.98

1.23

1.61

0.672

0.345

0.422

0.086

3/4"

0.5

0.0666

2.82

10.5

1.54

2.39

0.840

0.539

0.528

0.167

0.301

0.033

0.6

0.0804

3.39

14.7

1.85

3.29

1.01

0.751

0.633

0.240

0.361

0.041

0.8

0.1068

4.52

25.0

2.46

5.44

1.34

1.25

0.844

0.408

0.481

0.102

1"

1

0.1338

5.65

37.2

3.08

8.28

1.68

1.85

1.06

0.600

0.602

0.155

0.371

0.048

1-1/4"

2

0.2676

11.29

134.4

6.16

30.1

3.36

6.58

2.11

2.10

1.20

0.526

0.743

0.164

0.429

0.044

1-1/2"

3

0.4008

9.25

64.1

5.04

13.9

3.17

4.33

1.81

1.09

1.114

0.336

0.644

0.090

0.473

0.043

4

0.5346

12.33

111.2

6.72

23.9

4.22

7.42

2.41

1.83

1.49

0.565

0.858

0.150

0.630

0.071

5

0.6684

2"

8.40

36.7

5.28

11.2

3.01

2.75

1.86

0.835

1.073

0.223

0.788

0.104

6

0.8022

0.574

0.044

10.08

51.9

6.33

15.8

3.61

3.84

2.23

1.17

1.29

0.309

0.943

0.145

8

1.0692

0.765

0.073

2-1/2"

13.44

91.1

8.45

27.7

4.81

6.60

2.97

1.99

1.72

0.518

1.26

0.241

10

1.3368

0.956

0.108

0.670

0.046

10.56

42.4

6.02

9.99

3.71

2.99

2.15

0.774

1.58

0.361

15

2.0052

1.43

0.224

1.01

0.094

3"

9.03

21.6

5.57

6.36

3.22

1.63

2.37

0.755

20

2.6736

1.91

3.375

1.34

0.158

0.868

0.056

3-1/2"

12.03

37.8

7.43

10.9

4.29

2.78

3.16

1.28

25

3.342

2.39

0.561

1.68

0.234

1.09

0.083

0.812

0.041

9.28

16.7

5.37

4.22

3.94

1.93

30

4.0104

2.87

0.786

2.01

0.327

1.30

0.114

0.974

0.056

4"

11.14

23.8

6.44

5.92

4.73

2.72

35

4.6788

3.35

1.05

2.35

0.436

1.52

0.151

1.14

0.071

0.882

0.041

12.99

32.2

7.51

7.90

5.52

3.64

40

5.3472

3.83

1.35

2.68

0.556

1.74

0.192

1.30

0.095

1.01

0.052

14.85

41.5

8.59

10.24

6.30

4.65

45

6.018

4.30

1.67

3.02

0.668

1.95

0.239

1.46

0.117

1.13

0.064

9.67

12.80

7.09

5.85

50

6.684

4.78

2.03

3.35

0.839

2.17

0.288

1.62

0.142

1.26

0.076

10.74

15.66

7.88

7.15

60

8.022

5.74

2.87

4.02

1.18

2.60

0.46

1.95

0.204

1.51

0.107

5"

12.89

22.2

9.47

10.21

70

9.36

6.70

3.84

4.69

1.59

3.04

0.540

2.27

0.261

1.76

0.143

1.12

0.047

11.05

13.71

80

10.692

7.65

4.97

5.36

2.03

3.47

0.687

2.60

0.334

2.02

0.180

1.28

0.060

12.62

17.59

90

12.03

8.60

6.20

6.03

2.53

3.91

0.861

2.92

0.416

2.27

0.224

1.44

0.074

6"

14.20

22.0

100

13.368

9.56

7.59

6.70

3.09

4.34

1.05

3.25

0.509

2.52

0.272

1.60

0.090

1.11

0.036

15.778

26.9

125

16.71

11.97

11.76

8.38

4.71

5.43

1.61

4.06

0.769

3.15

0.415

2.01

0.135

1.39

0.055

19.72

41.4

150

20.052

14.36

16.7

10.05

6.69

6.51

2.24

4.87

1.08

3.78

0.580

2.41

0.190

1.67

0.077

175

23.394

16.75

22.3

11.73

8.97

7.60

3.00

5.68

1.44

4.41

0.774

2.81

0.253

1.94

0.102

200

26.736

19.14

28.8

13.42

11.68

8.68

3.87

6.49

1.85

5.04

0.985

3.21

0.323

2.22

0.130

8"

225

30.078

15.09

14.63

9.77

4.83

7.30

2.32

5.67

1.23

3.61

0.401

2.50

0.162

1.44

0.043

250

33.42

10.85

5.93

8.12

2.84

6.30

1.46

4.01

0.495

2.78

0.195

1.60

0.051

275

36.762

11.94

7.14

8.93

3.40

6.93

1.79

4.41

0.583

3.05

0.234

1.76

0.061

300

40.104

13.00

8.36

9.74

4.02

7.56

2.11

4.81

0.683

3.33

0.275

1.92

0.072

325

43.446

14.12

9.89

10.53

4.09

8.19

2.47

5.21

0.797

3.61

0.320

2.08

0.083

350

46.788

11.36

5.51

8.82

2.84

5.62

0.919

3.89

0.367

2.24

0.095

375

50.13

12.17

6.18

9.45

3.25

6.02

1.05

4.16

0.416

2.40

0.108

400

53.472

12.98

7.03

10.08

3.68

6.42

1.19

4.44

0.471

2.56

0.121

425

56.814

13.80

7.89

10.71

4.12

6.82

1.33

4.72

0.529

2.73

0.136

450

60.18

10"

14.61

8.80

11.34

4.60

7.22

1.48

5.00

0.590

2.89

0.151

475

63.54

1.93

0.054

11.97

5.12

7.62

1.64

5.27

0.653

3.04

0.166

500

66.84

2.03

0.059

12.60

5.65

8.02

1.81

5.55

0.720

3.21

0.182

550

73.5

2.24

0.071

13.85

6.79

8.82

2.17

6.11

0.861

3.53

0.219

600

80.22

2.44

0.083

15.12

8.04

9.63

2.55

6.66

1.02

3.85

0.258

650

86.88

2.64

0.097

10.43

2.98

7.22

1.18

4.17

0.301