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90°
Priming
Elbow
Plug
Pressure
Switch
Drain Plug
Suction Pipe
Vent Pipe
Well Seal
Well
Foot Valve
Fig. 3a SHALLOW WELL (WITH FOOT VALVE)
Relief
Valve
90° Elbow
Priming Plug
Pressure
Switch
Drain Plug
Suction Pipe
Vent Pipe
Well Seal
Well
Foot Valve
Fig. 3c SHALLOW WELL - INLINE TANK (WITH FOOT VALVE)
TABLE 3 – FRICTION LOSS CHART FOR PLASTIC PIPE*
Loss of Head in Feet, Due to Friction per 100 Feet of Pipe
Nominal
Pipe Size
3/4"
U.S. GPM
4
3.74
5
5.66
6
7.95
7
10.60
8
13.50
9
16.80
10
20.40
11
24.40
12
28.60
14
38.00
16
48.60
18
60.50
20
73.50
*For galvanized pipe, double the above figures.
TYPICAL INSTALLATIONS
Tank
Relief Valve
Control
Valve
Service
Line
Drain
Service
Line
Tank
Drain
Control Valve
1"
1 1/4"
1 1/2"
1.15
0.30
0.14
1.75
0.46
0.22
2.45
0.65
0.31
3.25
0.86
0.41
4.16
1.10
0.52
5.17
1.35
0.65
6.31
1.67
0.79
0.23
7.58
1.98
0.95
0.27
8.85
2.33
1.10
0.32
11.80
3.10
1.46
0.43
15.10
3.96
1.87
0.55
18.70
4.93
2.33
0.69
22.80
6.00
2.83
0.84
Priming
Pressure
Plug
Switch
Drain Plug
Suction Pipe
Well Seal
Fig. 3b SHALLOW WELL(WITH INLINE CHECK VALVE)
Pressure
Switch
Service
Line
Fig. 3d DEEP WELL - TANK MOUNTED SYSTEM (DOUBLE PIPE IN-
Loss of Head in Meters, Due to Friction per 100m of Pipe
Nominal
2"
Pipe Size
l/min.
–
15
–
20
–
25
–
30
–
35
–
40
45
50
55
60
65
70
75
4
Tank
90°
Elbow
Control
Valve
Vent Pipe
Well
90° Elbow
Control Valve
Priming Plug
Drain Plug
Tank
Injector
Foot Valve
STALLATION WITH FOOT VALVE)
20mm
25mm
32mm
3.70
1.15
0.30
5.33
1.64
0.43
7.14
2.18
0.56
13.50
4.13
1.08
16.30
5.00
1.31
23.50
7.30
1.90
28.30
8.74
2.31
34.20
10.60
2.79
40.70
12.60
3.32
48.10
14.90
3.92
55.70
17.30
4.54
63.80
19.70
5.20
72.20
22.40
5.89
Relief Valve
Service
Drain
Line
InlineCheck
Valve
Return
Pressure
Hose
Suction Pipe
Vent Pipe
Well Seal
Well
40mm
50mm
0.13
–
0.19
–
0.27
–
0.49
–
0.61
–
0.88
0.25
1.07
0.29
1.32
0.38
1.56
0.46
1.85
0.54
2.15
0.63
2.46
0.73
2.78
0.83
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