Page 166 - 2018_IPC

APPENDIX E

TABLE E103.3(5)
ALLOWANCE IN EQUIVALENT LENGTHS OF PIPE FOR FRICTION LOSS IN VALVES AND THREADED FITTINGS (feet)
PIPE SIZE (inches)
FITTING OR VALVE
1 3 1 1 1 2 1 3
/ 2 / 4 1 / 4 1 / 2 2 / 2
45-degree elbow 1.2 1.5 1.8 2.4 3.0 4.0 5.0 6.0
90-degree elbow 2.0 2.5 3.0 4.0 5.0 7.0 8.0 10.0
Tee, run 0.6 0.8 0.9 1.2 1.5 2.0 2.5 3.0
Tee, branch 3.0 4.0 5.0 6.0 7.0 10.0 12.0 15.0
Gate valve 0.4 0.5 0.6 0.8 1.0 1.3 1.6 2.0
Balancing valve 0.8 1.1 1.5 1.9 2.2 3.0 3.7 4.5
Plug-type cock 0.8 1.1 1.5 1.9 2.2 3.0 3.7 4.5
Check valve, swing 5.6 8.4 11.2 14.0 16.8 22.4 28.0 33.6
Globe valve 15.0 20.0 25.0 35.0 45.0 55.0 65.0 80.0
Angle valve 8.0 12.0 15.0 18.0 22.0 28.0 34.0 40.0
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 degree = 0.0175 rad.

TABLE E103.3(6)
a
PRESSURE LOSS IN FITTINGS AND VALVES EXPRESSED AS EQUIVALENT LENGTH OF TUBE (feet)
FITTINGS VALVES
NOMINAL OR
STANDARD SIZE Standard EII 90-Degree Tee Coupling
(inches) Ball Gate Butterfly Check
90 Degree 45 Degree Side Branch Straight Run
3
/ 8 0.5 — 1.5 — — — — — 1.5
1
/ 2 1 0.5 2 — — — — — 2
5
/ 1.5 0.5 2 — — — — — 2.5
8
3
/ 4 2 0.5 3 — — — — — 3
1 2.5 1 4.5 — — 0.5 — — 4.5
1
1 / 3 1 5.5 0.5 0.5 0.5 — — 5.5
4
1
1 / 2 4 1.5 7 0.5 0.5 0.5 — — 6.5
2 5.5 2 9 0.5 0.5 0.5 0.5 7.5 9
1
2 / 7 2.5 12 0.5 0.5 — 1 10 11.5
2
3 9 3.5 15 1 1 — 1.5 15.5 14.5
1
3 / 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
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 degree = 0.01745 rad.
a. Allowances are for streamlined soldered fittings and recessed threaded fittings. For threaded fittings, double the allowances shown in the table. The equivalent
lengths presented above are based on a C factor of 150 in the Hazen-Williams friction loss formula. The lengths shown are rounded to the nearest half-foot.

2018 INTERNATIONAL PLUMBING CODE ® 149
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