[banerj1s]

I guess you refer to Condensate Extraction Pump (CEP) for power plants. CEP are used to pump water from Condenser Hotwell to the Steam Water Cycle for Power Plants. The elevation of the hotwells are normally very low for a horizontal pumps to gain enough suction head. The reason is to economize the height of the turbine foundation and thereby the TG building height. So the condenser hotwell normally goes in a pit and vertical pumps best suited for the purpose as they need minimum height.

Cheers