Shopping Bag

0 item(s) in cart/ total: $0    view cart
Free Technical Support:: 215-525-1440

Friction Loss Chart

Feet Of Head Pressure Loss Per 100 Ft. of Plastic Pipe
GPH Pipe Diameter
1/2" 3/4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 4"
60 2.08 0.51              
120 4.16 1.02 0.55 0.14 0.07        
300 23.44 5.73 1.72 0.44 0.22 0.066 0.038 0.015  
420 43.06 10.52 3.17 0.81 0.38 0.11 0.051 0.021  
600 82.02 20.04 6.02 1.55 0.72 0.21 0.09 0.03  
900   42.46 12.77 3.28 1.53 0.45 0.19 0.07  
1200   72.34 21.75 5.59 2.61 0.76 0.32 0.11 0.03
1500     32.88 8.45 3.95 1.15 0.49 0.17 0.04
1800     46.08 11.85 5.53 1.62 0.68 0.23 0.06
2100       15.76 7.36 2.15 0.91 0.31 0.08
2400       20.18 9.43 2.75 1.16 0.4 0.11
2700       25.1 11.73 3.43 1.44 0.5 0.13
3000       30.51 14.25 4.16 1.75 0.6 0.16
3600         19.98 5.84 2.46 0.85 0.22
4200           7.76 3.27 1.13 0.3
4500           8.82 3.71 1.28 0.34
4800           9.94 4.19 1.44 0.38
5400           12.37 5.21 1.8 0.47
6000           15.03 6.33 2.18 0.58
7500             9.58 3.31 0.88
9000             13.41 4.63 1.22
10500               6.16 1.63
12000               7.88 2.08
15000               11.93 3.15
18000                 4.41
21000                 5.87
24000                 7.52
27000                  
30000                  
                   
Friction Loss in PVC Fittings = EQUIVALENT FEET OF STRAIGHT PIPE
PVC
Pipe Size
Type 1/2" 3/4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 4"
90° elbow 1.5 2 2.25 4 4 6 8 8 12
45° elbow 0.75 1 1.4 1.75 2 2.5 3 4 5
insert coupling 0.5 0.75 1 1.25 1.5 2 3 3 4
gate valve 0.3 0.4 0.6 0.8 1 1.5 1.6 2 3
male/female adapter 1 1.5 2 2.75 3.5 4.5 5.5 6.5 9.5
tee-flow (run) 1 1.4 1.7 2.3 2.7 4.3 5.1 6.3 8.3
tee-flow (branch) 4 5 6 7 8 12 15 16 22