These Water Pumps are used to keep water circulating for Turbine Condenser cooling. The cooled water from the cooling towers flows through thousands of condenser tubes. As the steam that has driven the turbine envelopes the cooled condenser tubes it is condensed back to water and is reused to feed the boilers. Boiler feed water is highly purified and therefore the cooling tower cooling water and the condensed steam are two completely independent closed systems.