Which device would typically be found on the inlet line of a steam turbine condenser?

In a steam turbine condenser setup, an atmospheric relief valve is typically installed on the inlet line to prevent excessive pressure accumulation. The function of this valve is to release any built-up pressure that might occur due to thermal expansion of water or steam. If the pressure within the condenser exceeds a certain threshold, the atmospheric relief valve opens to allow steam or vapor to vent, thus protecting the system components from potential damage that could arise from overpressure situations.

The design and operation of the condenser rely on maintaining a vacuum or a very low-pressure environment to effectively condense steam back into water. By venting excess pressure, the atmospheric relief valve helps maintain this low-pressure operation, ensuring the efficient function of the condenser.

Other devices mentioned in the options serve different functions in a steam system. A pressure relief valve typically activates at higher pressure levels but is not the primary device used for managing atmospheric pressure in this specific context. A flow control valve manages the rate of fluid flow but does not address pressure issues directly. A bypass valve is used to redirect flow around a section of the system rather than manage pressures directly at the condenser inlet. Therefore, the atmospheric relief valve is the most appropriate choice for maintaining the correct operating conditions in a steam turbine condenser.