What is the drop-off characteristic of pressure regulators referred to as?

The drop-off characteristic of pressure regulators is referred to as "droop." Droop describes the phenomenon where the output pressure of a regulator decreases when there is an increase in flow demand or a drop in inlet pressure. This is an important aspect of pressure regulator performance, as it indicates how well the regulator can maintain a constant output pressure under varying load conditions.

Understanding droop is crucial in applications where maintaining a stable pressure is critical for system functionality. A regulator with minimal droop will provide more consistent pressure, leading to improved efficiency and performance of pneumatic systems.

The concept of droop is particularly relevant in the design and selection of regulators for specific applications, as it impacts the overall behavior and reliability of pneumatic control circuits. In contrast, terms like decay, dip, and decline do not specifically capture the relationship between pressure and flow in the context of regulators as precisely as droop does.