What type of valve is designed to control flow or pressure without shutting off the flow completely?

The globe valve is specifically designed to control flow and pressure within a piping system while allowing for precise adjustments. This functionality is due to its unique internal structure, which features a movable disk that can be positioned to partially obstruct the flow, enabling the operator to regulate the flow rate without completely stopping it.

This makes globe valves especially suitable for applications where flow control is necessary, as they provide a greater degree of regulation compared to other types of valves. For instance, ball valves and gate valves are typically used for on/off control; when fully opened, they allow for unrestricted flow but cannot be adjusted for varying flow rates in the same manner. Check valves are designed to prevent backflow and do not regulate flow control.

Consequently, the globe valve stands out as the most effective option for controlling flow or pressure without ceasing the flow entirely.