Handbook of Civil Engineering Calculations

TABLE

3.

Resistance

of

Fittings

and

Valves (length

of

straight pipe giving equivalent resistance)

Swing

check,

open

ft

m

40

12.2

53

16.2

67

20.4

80

24.4

Globe valve,

open

ft

m

160

48.8

220

67.0

290

88.4

340

103.6

Gate

valve,open

ft

m

3.5 1.14.5 1.45.7 1.76.7

2.0

Tee

ft

m

33

10.1

43

13.1

56

17.1

66

20.1

45° Ell

ft

m

7.7

2.3

10

3.0

13

3.9

15

4.6

Long-radius

ell

ft

m

11

3.4

14

4.3

17

5.2

20

6.1

Medium-radius

ell

ft

m

14

4.3

18

5.5

22

6.7

26

7.9

Standard

ell

ft

m

16

4.9

21

6.4

26

7.9

32

9.8

Pipe size

in

mm 6 152.4 8 203.2

10

254.0

12

304.8