# Equivalent Length of Valves and Fittings Calculation

For pipes with a nominal diameter from 1/2" to 24 inches

There is certain amount of pressure loss in straight pipe and in addition valves and fittings in a section of pipe will add to the overall pressure loss that occurs in a section of pipe.
Calculate friction losses for fittings and valves in a section of pipe expressed in equivalent length of pipe (in feet).

Example:
Your section of 2" pipe has 2 x gate valves, 2 x 90° elbows, 4 x straight true tee's and 12 branch tee's
Select 2" for nominal pipe size and enter 2 gate valves, 2 90° elbows, 4 straight true tee's and 12 branch tee's.
Result = this will add 174.2 feet in straight pipe.

### Equivalent Length for Fittings 1/2" to 24"

Nominal Pipe Size
 1/2" 3/4" 1" 1 1/14" 1 1/2" 2" 2 1/2" 3" 4" 6" 8" 10" 12" 14" 16" 18" 20" 24"
Gate Valve #
Angle Valve #
Globe Valve #
Swing Check Valve #
Tee Run #
Tee Branch #
90 Elbow #
45 Elbow #

#### Results:

 Equivalent Length of Fittings ft

#### Calculation

1. select the nominal diameter of the pipe (inches)
2. enter the number of valves and fittings used in your section of pipe

#### Results

1. equivalent length of straight pipe in feet calculated from the valves and fittings
 Equivalent Length in Feet for Fittings and Valves Fitting/Valve 1/2" 3/4" 1" 1 1/4" 1 1/2" 2" 2 1/2" 3" 4" Tee Run 1 1.4 1.7 2.3 2.7 4 4.9 6.1 7.9 Tee Branch 3.8 4.9 6 7.3 8.4 12 14.7 16.4 22 90° Ellbow 1.5 2 2.5 3.8 4 5.7 6.9 7.9 11.4 45° Ellbow 0.8 1.1 1.4 1.8 2.1 2.6 3.1 4 5.1 Swing Check Valve 5.2 6.9 8.7 11.5 13.4 17.2 20.6 25.5 33.6 Angle Valve 7.8 10.3 13.1 17.3 20.1 25.8 30.9 38.4 50.3 Globe Valve 17.6 23.3 29.7 39.1 45.6 58.6 20 86.9 114 Gate Valve 0.4 0.6 0.7 0.9 1.1 1.4 1.7 2 2.7
 Equivalent Length in Feet for Fittings and Valves Fitting/Valve 6" 8" 10" 12" 14" 16" 18" 20" 24" Tee Run 12.3 14 17.5 20 25 27 32 35 42 Tee Branch 32.7 49 57 67 78 88 107 118 137 90° Ellbow 16.7 21 26 32 37 43 53 58 67 45° Ellbow 8 10.6 13.5 15.5 18 20 23 25 30 Swing Check Valve 50.5 33.3 41.8 49.7 54.7 62.5 70.3 78.4 94.3 Angle Valve 75.8 99.8 125 149 164 188 210 235 283 Globe Valve 172 226 284 338 372 425 478 533 641 Gate Valve 4 5.3 6.7 8 8.8 10 16.9 12.5 15.1

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