Leakage through the non-return valve should be no greater than what percent?

Understand the Problem

The question is asking what percentage of leakage is acceptable through a non-return valve. A non-return valve is typically used to prevent backflow in a system. The question requires knowledge of engineering standards.

More Information

While some valves should ideally have no leakage, in practice, a small amount of leakage is often acceptable. For check valves, a common rule of thumb is to allow for a leakage rate of up to 10% of the forward flow when a single check valve is used.

Tips

Understanding the specific requirements and standards for the application is crucial in determining acceptable leakage rates. Always consult relevant guidelines and regulations.

Sources

• Check Valve Leakage For PSV Sizing. - Eng-Tips - eng-tips.com