Right Pump Application

[fayazdin1]

Hello dear members
I am designing a water system for a hospital. Below is the data :
Pump-1 draws water from city line and dump water into two underground tanks. City water pressure is very low, that is why a pump is required to pull water from city line and pump it to underground tanks.

Pump-2 draws water from underground tanks to an elevated (25-m high) elevated tanks
The questions is should I use booster pump package or simple end suction pumps?

What is the right application? Please advise !!!

 

[jonr12]

Booster pump packages can be made with end suction centrifugal pumps, multistage centrifugal pumps, split case, turbine, or just about any kind of pump. You need to pick the most efficient and cost effective pump available for the flow and pressure required, then you can make a ‘booster pump package” with that pump.

 

[Artisi]

Is pumping direct from a town water supply system allowed?

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[bimr]

Considering the level of experience that you have demonstrated by your post, you probably would be better served with a prepackaged booster pump system. Such systems include automatic controls systems to control the pumps and water pressures.

However, as Artisi points out, additional questions will need to be addressed.

If the city water supply has inadequate pressure/flow, you may overpump the city's water supply.

[ol 1]
[li]This may cause cavitation of your new water pump leading to premature failure of the pump; and/or[/li]
[li][/li]
[li]Contaminant your water supply by pulling in contaminants from ground water surronding the city's buried water supply pipeline; and[/li]
[li][/li]
[li]Possibly collapse the city water main.[/li]
[/ol]

You probably should contact the city public works engineer and obtain guidance from him on how to proceed.

If you a a booster pump system, you probably do not need the elevated tank for the normal water supply, unless the tank is for fire water supply.