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6. Flexible connecting hoses
correct
X
Bend
Pipe bend
correct
correct
correct
Installation guidelines:
Hose DN
8 mm
Ensure sufficient equipotential bonding.
• The permissible bending radius R
observed at all times, including during transport and
assembly as well as when installed. If it is not possible to
observe the minimum bending radius, a different installa-
tion method should be used or a suitable hose should be
D
external
selected.
L
min
Please refer to the table for the minimum length:
L
wrong
min
60 mm
• For curved installation there must be sufficient hose length
available to form an open loop, as otherwise the hose will
become kinked at the joints and thus destroyed.
• The hose length may change slightly due to the effects
of pressure or heat. For straight installation, allowance
wrong
should therefore be made to compensate for changes in
the hose length.
wrong
• Never twist or kink the flexible connection.
• Ensure that the hose is never stressed by external tensile
or compressive forces during assembly or when in use.
• Rigid connections (external thread) should not be further
tightened after attaching the second connection, as this
causes twisting and may damage the hose.
wrong
• The hose installer is always responsible for ensuring a
tight join.
• The installer should check any sealing material supplied
with the hose to ensure that it is suitable, as the hose
manufacturer does not know the connection material or
geometry.
D
PN
external
12 mm
20 bar
α = 90°
α = 180°
L
L
min
min
140 mm
180 mm
23
R
min
27 mm
= 27 mm must be
min
α = 360°
L
min
260 mm
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