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Table E. Type M Pressure loss in fittings and valves expressed in
equivalent length of tube, feet


Nominal
or
standard
size, in.
Fittings
Valves
Standard Ell
90 Tee
Coupling
Ball
Gate
Btfly
Check
90
45
Side
branch
Straight
run
3/8
.5
1.5
1.5
1/2
1
.5
2
2
5/8
1.5
.5
2
2.5
3/4
2
.5
3
3
1
2.5
1
4.5
.5
4.5
1 1/4
3
1
5.5
.5
.5
.5
5.5
1 1/2
4
1.5
7
.5
.5
.5
6.5
2
5.5
2
9
.5
.5
.5
.5
7.5
9
2 1/2
7
2.5
12
.5
.5
1
10
11.5
3
9
3.5
15
1
1
1.5
15.5
14.5
3 1/2
9
3.5
14
1
1
2
12.5
4
12.5
5
21
1
1
2
16
18.5
5
16
6
27
1.5
1.5
3
11.5
23.5
6
19
7
34
2
2
3.5
13.5
26.5
8
29
11
50
3
3
5
12.5
39
NOTES:

Allowances are for streamlined soldered fittings and recessed threaded fittings.
For threaded fittings, double the allowance shown on the table.
The equivalent lengths presented above are based upon a C factor of 150 in
the Hazen-Williams friction loss formula. The lengths shown are rounded to
the nearest half foot.

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