English (GB)
5
3.3.7 Suction from a well
Fig. 6
Suction from a well
3.3.8 Suction from freshwater tank
Fig. 7
Suction from freshwater tank
3.3.9 Inlet pipe length
The overview below shows the different possible inlet pipe
lengths, depending on the vertical pipe length.
The overview is only intended as a guide.
Fig. 8
Inlet pipe length
Preconditions:
T
M
06
43
49
41
1
7
Pos. Description
1
Highest tapping point
2
Isolating valve
3
Flexible hoses
4
Pipe support
5
Inlet filter.
If the water may contain sand, gravel or other debris,
please install a filter on the inlet side to protect the pump
and installation.
6
Foot valve with strainer (recommended).
H1
Maximum suction lift is 8 m (26 ft).
H2
Inlet pipe must be submersed at least 0.5 m (1.64 ft).
TM
06 434
8 41
17
Pos. Description
1
Highest tapping point
2
Pipe hangers
3
Isolating valve
4
Flexible hoses
5
Drain to sewer
6
Inlet filter.
If the water may contain sand, gravel or other debris,
please install a filter on the inlet side to protect the pump
and installation.
7
Freshwater tank
H2
H1
6
5
4
2
3
1
A
1
2
3
4
6
7
8
5
8
Foot valve with strainer (recommended)
A
Minimum 1 ° inclination
TM
06 437
2 41
17
DN 32
DN 40
H
[m (ft)]
L
[m (ft)]
H
[m (ft)]
L
[m (ft)]
0 (0)
68 (223)
0 (0)
207 (679)
3 (10)
43 (141)
3 (10)
129 (423)
6 (20)
17 (56)
6 (20)
52 (171)
7 (23)
9 (30)
7 (23)
26 (85)
8 (26)
0 (0)
8 (26)
0 (0)
Maximum flow velocity:
1 l/s (16 gpm).
Inside roughness of pipes: 0.01 mm (0.0004 inch).
Size
Inside pipe diameter
[mm (inches)]
Pressure loss
[m/m (psi/ft)]
DN 32 28 (1.1)
0.117 (5/100)
DN 40 35.2 (1.4)
0.0387 (1.6/100)
Pos. Description
H
L
