Friction Chart
Home Page
Filters
Pond Liners
Skimmers
Pumps
Fountain Heads
UV Sterilizers
Fountains
Pond Kits
Supplies
Plumbing
Accessories

Friction Loss Charts - Per 100 of Pipe

GPM

 

 

 

Size

Plastic

Pipe

 

 

GPM

 

5

10

15

20

25

30

35

40

45

50

75

100

125

150

200

1/2

24

-

-

-

-

-

-

-

-

-

-

-

-

-

-

 

3/4

5

19

30

-

-

-

-

-

-

-

-

-

-

-

-

 

1

1.5

5

10

17

26

-

-

-

-

-

-

-

-

-

-

1 1/4

0.5

1.5

3.5

5.5

8

11

14

18

21

25

-

-

-

-

-

 

1 1/2

-

1

1.5

2.5

4

5.5

7

8.5

10.5

13

27

-

-

-

-

2

-

-

-

1

1.5

2

2.5

3

3.5

4

8

15

22

30

-

3

-

-

-

-

-

-

-

-

-

1

1.5

2

3.5

5

8

4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

2

 

 

5

10

15

20

25

30

35

40

45

50

75

100

125

150

200

This chart gives friction losses for your given flow rate per 100 feet of pipe.  Example: if you have a 45 GPM flow rate and you are using 2 pipe, and you are running 75 feet, your friction losses will be 3.5 X 0.75 = 2.625 feet.  Note:  It is best to keep total friction losses less that 6 feet per 100

Friction Loss in PVC Fittings in Equivalent Feet of Straight Pipe

Normal Pipe Size

1/2

3/4

1

1 1/4

1 1/2

2

3

4

90 Elbow - Standard

1.5

2.0

2.25

4.0

4.0

6.0

8.0

12.0

45 Elbow, Standard

0.75

1.0

1.4

1.75

2.0

2.5

4.0

5.0

Insert Coupling

0.5

0.75

1.0

1.25

1.5

2.0

3.0

4.0

Gate Valve

0.3

0.4

0.6

0.8

1.0

1.5

2.0

3.0

Male-Female Adaptors

1.0

1.5

2.0

2.75

3.5

4.5

6.5

9.0

Tee-Flow thru Run

1.0

1.4

1.7

2.3

2.7

4.3

6.3

8.3

Tee-Flow thru Branch

4.0

5.0

6.0

7.0

8.0

12.0

16.0

22.0

Call 1-888-551-4343 for quotes on all installations, service, maintenance, ordering, and consulting

This site has been designed by Sperical Media, a division of Creative waterscapes, Inc.  Contact webmaster@creative-waterscapes.com with questions or comments regarding this site. Copyright (c) 1998 - 2001 Creative Waterscapes, Inc. All rights reserved.  All product images on this site have been obtained from their respective owners royalty free for use in the sole advertisement of their products and in no way are intended to deface or misrepresent the intended product or service.