Specifications
Milan Supply Company/Milan Engineered Systems
Page 45
FRICTION LOSS CHART
FRICTION LOSS PER 100 FEET OF PIPE OF PLASTIC PIPE
PIPE DIAMETER
1/2 in. 3/4 in. 1 in. 1 1/4 in. 1 1/2 in. 2 in. 2 1/2 in. 3 in. 4 in.
5 in.
GPM SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
SCH
40
SCH
80
1
2.08 4.02 0.51
0.86
2
4.16 8.03 1.02 1.72 0.55 0.88 0.14 0.21 0.07
0.10
5
23.44 45.23 5.73 9.67 1.72 2.75 0.44 0.66 0.22 0.30 0.066 0.10 0.038 0.05 0.015
0.02
7
43.06 83.07 10.52 17.76 3.17 5.04 0.81 1.21 0.38 0.55 0.11 0.15 0.051 0.07 0.021
0.028
10
82.02 - 20.04 33.84 6.02 9.61 1.55 2.30 0.72 1.04 0.21 0.29 0.09 0.12 0.03
0.04
15
- - 42.46 71.70 12.77 20.36 3.28 4.87 1.53 2.20 0.45 0.62 0.19 0.26 0.07
0.09
20
- - 72.34 - 21.75 34.68 5.59 8.30 2.61 3.75 0.76 1.06 0.32 0.44 0.11 0.15 0.03
0.04
25
- - - - 32.88 52.43 8.45 12.55 3.95 5.67 1.15 1.60 0.49 0.67 0.17 0.22 0.04
0.06
30
- - - - 46.08 73.48 11.85 17.59 5.53 7.95 1.62 2.25 0.68 0.94 0.23 0.31 0.06 0.08 0.02
0.03
35
- - - - - - 15.76 23.40 7.36 10.58 2.15 2.99 0.91 1.25 0.31 0.42 0.08 0.11 0.03
0.04
40
- - - - - - 20.18 29.97 9.43 13.55 2.75 3.83 1.16 1.60 0.40 0.54 0.11 0.14 0.03
0.04
45
- - - - - - 25.10 37.27 11.73 16.85 3.43 4.76 1.44 1.99 0.50 0.67 0.13 0.17 0.04
0.06
50
- - - - - - 30.51 45.30 14.25 20.48 4.16 5.79 1.75 2.42 0.60 0.81 0.16 0.21 0.05
0.07
60
- - - - - - - - 19.98 28.70 5.84 8.12 2.46 3.39 0.85 1.14 0.22 0.30 0.07
0.10
70
- - - - - - - - - - 7.76 10.80 3.27 4.51 1.13 1.51 0.30 0.39 0.10
0.13
75
- - - - - - - - - - 8.82 12.27 3.71 5.12 1.28 1.72 0.34 0.45 0.11
0.14
80
- - - - - - - - - - 9.94 13.83 4.19 5.77 1.44 1.94 0.38 0.50 0.13
0.16
90
- - - - - - - - - - 12.37 17.20 5.21 7.18 1.80 2.41 0.47 0.63 0.16
0.20
100
- - - - - - - - - - 15.03 20.90 6.33 8.72 2.18 2.93 0.58 0.76 0.19
0.24
125
- - - - - - - - - - - - 9.58 13.21 3.31 4.43 0.88 1.16 0.29
0.37
150
- - - - - - - - - - - - 13.41 18.48 4.63 6.20 1.22 1.61 0.40
0.52
175
- - - - - - - - - - - - - - 6.16 8.26 1.63 2.15 0.54
0.69
200
- - - - - - - - - - - - - - 7.88 10.57 2.08 2.75 0.69
0.88
250
- - - - - - - - - - - - - - 11.93 16.00 3.15 4.16 1.05
1.34
300
- - - - - - - - - - - - - - - - 4.41 5.83 1.46
1.87
350
- - - - - - - - - - - - - - - - 5.87 7.76 1.95
2.49
400
- - - - - - - - - - - - - - - - 7.52 9.93 2.49
3.19
450
- - - - - - - - - - - - - - - - - - 3.09
3.97
500
- - - - - - - - - - - - - - - - - - 3.76
4.82
THIS CHART GIVES FRICTION LOSSES FOR YOUR GIVEN FLOW RATE PER 100 FEET OF PIPE. EXAMPLE: IF YOU HAVE 60 GALLONS PER MINUTE AND YOU'RE USING 2 INCH SCHEDULE 80 PIPE AND YOU HAVE
A 160 FEET OF PIPE, YOUR FRICTION LOSS IS 8.12 x 1.6 = 12.99 FEET.
NOTE: IT IS BEST TO KEEP YOUR FRICTION LOSS (PER 100 FEET OF PIPE) TO LESS THAN 5 FEET.
FRICTION LOSS IN PVC FITTINGS IN EQUIVALENT FEET OF STRAIGHT PIPE
NORMAL PIPE SIZE (IN)
1/2"
3/4"
1" 1
1/4
" 1
1/2
" 2" 2
1/2
" 3"
4"
90q ELBOW, STANDARD
1.5 2.0 2.25 4.0 4.0 6.0 8.0 8.0
12.0
45q ELBOW, STANDARD
0.75 1.0 1.4 1.75 2.0 2.5 3.0 4.0
5.0
INSERT COUPLING 0.5 0.75 1.0 1.25 1.5 2.0 3.0 3.0
4.0
GATE VALUE .3 .4 .6 .8 1.0 1.5 1.6 2.0
3.0
MALE-FEMALE ADAPTERS 1.0 1.5 2.0 2.75 3.5 4.5 - 6.5
9.0
TEE - FLOW through RUN 1.0 1.4 1.7 2.3 2.7 4.3 5.1 6.3
8.3
TEE - FLOW THROUGH BRANCH 4.0 5.0 6.0 7.0 8.0 12.0 15.0 16.0
22.0