En
gl
is
h (
G
B)
4
2.3.2 Pipe connection
If the inlet pipe is longer than 10 m or the suction lift
is greater than 4 m, the diameter of the pipe must be
larger than 1". If a hose is used as inlet pipe, it must
be non-collapsible.
To prevent solids from entering the pump, you can fit
a filter to the inlet pipe. We recommend that you fit a
foot valve on the inlet side.
For suction lifts of over 4 m or for long horizontal
stretches, we recommend that you use an inlet pipe
with a diameter larger than the inlet opening of the
pump.
Fig. 5
Inlet pipe sloping upwards
2.3.3 JPD deep-well installation
A JPD must have the ejector installed in the well.
This means that two pipes are needed for the suction
installation.
Fig. 6
JPD PT installation
The internal diameters of the pipes must
never be smaller than that of the openings
of the pump.
To prevent formation of air pockets, the
inlet pipe must slope slightly upwards
towards the pump. See fig.
TM
06
45
32
25
15
T
M
06
5
4
3
6
46
15
up to 27m
FP
"
)
Up to 27 m
≥
10 cm (4")
