What type of valve is commonly used for controlling steam flow in boilers?

The globe valve is particularly suited for controlling steam flow in boilers due to its design, which allows for precise throttling and flow regulation. This type of valve features a spherical body with an internal baffle that provides a smooth flow path, offering good control over the medium being passed through.

When dealing with steam in a boiler system, it is crucial to maintain precise control over pressure and flow rates, as improper handling can lead to inefficiencies or even safety hazards. The globe valve’s configuration enables it to be fully opened or closed, as well as to maintain a range of intermediate positions, making it ideal for such applications.

In contrast, while ball valves provide quick on-off control, they are not typically used for throttling applications due to their design, which can create turbulence and reduce overall efficiency when partially open. Gate valves are generally used for full flow applications and are not designed for throttling, as they can be sensitive to pressure drops and flow control. Check valves are specifically used to prevent backflow in a system and do not offer any control over the flow rate. Hence, the globe valve stands out as the optimal choice for managing steam flow effectively in a boiler context.