What advantage does a pneumatically controlled PRV offer?

A pneumatically controlled pressure relief valve (PRV) offers greater control than pilot-operated valves due to its ability to respond quickly to changes in pressure and adjust accordingly. This enhanced responsiveness is crucial in systems where the pressure fluctuates frequently, as it helps maintain safety and operational efficiency.

Pneumatic control provides precise adjustments and can be finely tuned to specific set points, allowing for better regulation of pressure. This is particularly beneficial in demanding industrial applications where precise control over pressure is necessary to prevent system failures or hazards.

In contrast, other choices may refer to operational costs and simplicity, which may not be distinctive advantages of a pneumatically controlled PRV compared to its performance and control features. The limited application range mentioned in one of the options suggests the opposite of an advantage—the versatility of a PRV in various scenarios is essential, making that choice less favorable. Overall, the key benefit lies in the superior control capabilities offered by pneumatic mechanisms compared to mechanical or pilot-operated alternatives.