What aspect does the hose assembly need to be tested for by a manufacturer before use?

The hose assembly needs to be tested for pressure resistance before use because it plays a crucial role in ensuring safety and functionality in systems that utilize compressed natural gas. Pressure resistance refers to the ability of the hose to withstand internal pressures without bursting or leaking. Given that CNG systems operate under high pressures, verifying that the hose can handle these conditions is essential to prevent failures that could lead to dangerous leaks or ruptures.

While flexibility, temperature tolerance, and durability are also important characteristics of a hose assembly, pressure resistance is specifically critical in the context of CNG applications where maintaining a secure and intact environment for the gas is paramount. Testing the hose for pressure ensures that it meets industry standards and regulations, thereby promoting the safe transport and handling of compressed natural gas in various applications.