Water Supply Engineering
Surge tanks are used

to increase the velocity in a pipeline
for storage water
as overflow valves
to guard against water hammer

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Water Supply Engineering
In centrifugal pump installation,

All listed here
The diameter of the pipe at inlet as well as at outlet, is kept smaller than the delivery pipe
Pump is properly primed before starting
The motor may burn out if it is started with empty delivery pipe and with open gate valve

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