Which valves control the water level in the surface condenser hot well of a steam turbine?

• A. Recirculation and overboard valves
• B. Main steam and stop valves
• C. Blowdown and drain valves
• D. Check and relief valves

Answer: (A)

Controlling the water level in the surface condenser hot well is about balancing how much condensate is recirculated back into the condenser versus how much is discharged overboard. The recirculation valve sends condensate from the hot well back into the condenser to keep the level steady and help maintain the vacuum. The overboard valve releases excess condensate to prevent the level from rising too high. Together, they adjust the hot well level as operating conditions change.

The other valves serve different purposes: main steam and stop valves control the turbine’s steam supply; blowdown and drain valves handle draining and purge tasks; and check and relief valves protect against backflow or overpressure rather than actively regulating the hot well level.