At what pressure should new single-walled product piping be air tested?

New single-walled product piping should be air tested at a pressure of 50 Psig for a duration of 1 hour. This testing method is designed to ensure that the piping system is capable of containing the product and preventing leaks. The specified pressure is sufficiently high to reveal any weaknesses or faults in the piping that could lead to failures under normal operational conditions.

Conducting the test at this pressure also aligns with safety standards and regulations, which aim to mitigate the risk of leaks that could cause environmental contamination or safety hazards. Testing for a shorter duration, such as one hour, is practical while still being effective for identifying potential issues in the piping system without requiring excessive time or resources.

Overall, this method provides a reliable assessment of the integrity of new single-walled product piping before it is put into service, ensuring compliance with safety regulations and protecting public health and the environment.