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1
2
3
Fig. 1
Example showing the position of expansion joints, pipe
supports and machine shoes
Pos.
Description
1
Expansion joint (and good location for isolating valves)
2
Pipe support
3
Machine shoe
Fig. 2
Example showing the position of expansion joints, pipe
supports and mounting bolts
Pos.
Description
1
Expansion joint (and good location for isolating valves)
2
Pipe support
3
Mounting bolt
Expansion joints, pipe supports as well as machine
shoes or mounting bolts shown in figs
respectively are not included in a standard booster
system.
Tighten all nuts before startup.
Fasten the pipes to parts of the building to ensure that they
cannot move or be twisted.
4
1
2
3
1
and
2
4.2.2 Foundation
Position the booster system on an even and solid surface, for
instance a concrete floor or foundation. The booster system must
be bolted to the floor or foundation.
The weight of a concrete foundation must be 1.5
times the weight of the booster system.
4.2.3 Vibration dampers
To prevent the transmission of vibrations to buildings, it may be
necessary to isolate the booster system foundation from building
parts by means of vibration dampers.
The right damper varies from installation to installation, and a
wrong damper may increase the vibration level. Vibration
dampers must therefore be sized by the supplier. If the booster
system is installed on a base frame with vibration dampers,
always fit expansion joints on the manifolds. This is important to
prevent the booster system from "hanging" in the pipes.
4.2.4 Expansion joints
Fit expansion joints for these reasons:
•
to absorb expansions or contractions in the pipes caused by
changing liquid temperature
•
to reduce mechanical strains in connection with pressure
surges in the pipes
•
to isolate mechanical structure-borne noise in the pipes (only
rubber bellows expansion joints).
Do not install expansion joints to compensate for
inaccuracies in the pipes such as center
displacement of flanges.
Fit expansion joints at a distance of minimum 1 to 1 1/2 times the
nominal flange diameter from the manifold on the inlet as well as
on the outlet side. This prevents the development of turbulence in
the expansion joints, resulting in better inlet conditions and a
minimum pressure loss on the outlet side.
Fig. 3
Examples of rubber bellows expansion joints without
and with limiting rods
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