Manual for the Design of Pipe Systems and Pumps - GEA ...

5 Technical Fundamentals
5.1 Installation
5.2 Pipe
connection
This Manual helps carrying out the optimal design of centrifugal pumps. We show you
how to proceed to find the right pump.
Install the pump in close vicinity to the tank or to another source from which the liquid will
be pumped. Make sure that as few as possible valves and bends are integrated in the pump‘s
suction pipe, in order to keep the pressure drop as low as possible. Sufficient space around
the pump provides for easy maintenance work and inspection. Pumps equipped with a
conventional base plate and motor base should be mounted on a steady foundation and be
precisely aligned prior commissioning.
GEA Tuchenhagen pumps are equipped with pipe connections that are adaped to the flow
rate. Very small pipe dimensions result in low cost on one hand, but on the other hand put
the safe, reliable and cavitation-free operation of the pump at risk.
Practical experience has shown that identical connection diameters on a short suction pipe
are beneficial, however, always keep an eye on the fluid velocity. Excepted thereof are long
suction pipes with integrated valves and bends. In this case the suction pipe should be by one
size larger, in order to reduce the pressure drop.
The pipes connected to the pump should always be supported in a way that no forces can act
on the pump sockets. Attention must be paid to thermal expanson of the pipe system.
In such a case, expansion compensators are recommended.
As long as the pump is mounted on calotte-type feet, the pump will be able to compensate
slight pipe length expansions.
If the pump is rigid mounted on to a base plate, compensation must be ensured by the pipe
system itself, using pipe bends or suitable compensators.
Suction socket
Fig. 11 - Pipe support
Fixing
16
GEA Tuchenhagen
Fixing
Pressure socket