Pipework
When determining and connecting suction and discharge lines consider the following points:
• The bore size of the suction and discharge lines must be larger than the bore size of the pump
hose. In case of doubt, consult your Bredel representative.
• Avoid sharp bends in the discharge line. Make sure that the radius of the bent discharge line is
as large as possible. It is recommended to use Y-connections instead of T-connections.
• Keep the delivery and suction lines as short and direct as possible.
• Select the correct mounting material for flexible hoses and make sure that the installation is
suited for the design pressure of the system.
• Do not exceed the maximum working pressure of the hose pump.
• Prevent the valves in the suction and discharge lines from being shut while the pump is
running.
See also
Refer to "Performance" on page 81
CAUTION
Consider the maximum permissible working pressure on the discharge
side. Exceeding the maximum working pressure may lead to serious
damage to the pump.
• For the ease of hose changing and some pulsation suppression, it is recommended to use a
segment of flexible hose between the pump flange and hard piping of the suction and/or
discharge line. A segment of three quarters (3/4) of the pump hose length for the flexible pipe
work is recommended. Bredel also recommends installing an isolation valve and pipedrain in
the suction and discharge pipework to allow fluid isolation and drainage from the pump
during maintenance. Following these recommendations will help to minimize the exposure of
process fluid to maintenance personnel.
Make sure that the maximum forces on the flanges are not exceeded. The permissible loads are given
in the following table.
m-bredel-25-32-en-05 29
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