What is the main purpose of a valve's working pressure rating?

The main purpose of a valve's working pressure rating is to specify the maximum pressure the valve can handle. This rating is crucial for ensuring the safety and efficiency of the valve's operation within a system. It outlines the pressure limits under which the valve is designed to function properly without failing. Understanding the working pressure rating helps prevent situations where excessive pressure could lead to leaks, ruptures, or catastrophic failures, ensuring the valve operates reliably in its intended application.

While the other aspects of valves, such as temperature limits, fluid compatibility, and material strength, are important for overall performance, they serve different purposes. The working pressure rating specifically focuses on the ability of the valve to withstand pressure, making it the primary factor that ensures safe operation in various applications.