A globe valve that closes against the direction of fluid flow is known as what?

A globe valve that closes against the direction of fluid flow is referred to as "flow to open." This terminology indicates that the valve is designed to open when the flow direction is aligned with the closure mechanism, allowing fluid to pass through when the valve is opened. In contrast, when the valve closes, it obstructs the flow, effectively sealing off the passage of the fluid. This design is crucial in applications where controlling the flow of the fluid is necessary.

Understanding the term "flow to open" helps in identifying the operational characteristics of various valve types in instrumentation and process control. A globe valve typically has a spherical body that allows for a high degree of flow control and throttling, further emphasizing the importance of its flow direction in the context of fluid dynamics.

In this case, the other terms may not accurately describe the mechanism or function of the globe valve. "Reverse flow" is not applicable here since it suggests a different flow situation, while "pressure close" and "closed position" do not specifically indicate the operational principle related to flow direction and valve function. Thus, recognizing "flow to open" as the correct term provides clarity on how this valve operates in response to fluid dynamics.