What should be avoided for the CNG hose to ensure safety?

Fretting and overheating are critical concerns for CNG hoses because they can compromise the integrity of the hose and lead to potential failures or leaks. Fretting occurs when there is relative movement between the hose and its connectors, which can cause wear and tear over time. This wear can create small cracks or abrasions that may allow gas to escape, posing a significant safety hazard.

Overheating can be a result of gas compression and increased pressure within the hose or due to external environmental factors. Elevated temperatures can weaken the materials used in the hose, leading to degradation, loss of flexibility, and ultimately failure. Therefore, managing both fretting and overheating is essential for maintaining the safety and functionality of CNG hoses, ensuring that they operate effectively without risk of leaks or bursts.

While moisture exposure, direct sunlight, and mud and dirt accumulation may also have negative impacts on the longevity and operation of CNG hoses, the combination of fretting and overheating represents direct mechanical and thermal threats that can result in immediate safety issues if not addressed.