What does the leakage test assess in a check valve?

The leakage test is specifically designed to assess the ability of a check valve to prevent leaks at its rated pressure. This is a critical functionality for check valves, as they are intended to allow flow in one direction while preventing backflow, which could lead to significant operational issues in a water system. A successful leakage test confirms that the valve sealing mechanism is effective under the specified conditions, ensuring integrity and reliability in the application where the valve is installed.

While factors such as durability of materials, resistance to breakage, and ease of installation are important in evaluating a check valve's overall performance and suitability, the primary focus of a leakage test is on its sealing ability under pressure. This makes it a crucial test for determining the valve's reliability in preventing unwanted leaks, which is essential for maintaining system performance and preventing water loss.