What pressure condition must hoses and their connections be suitable for?

The hoses and their connections in a compressed natural gas (CNG) system are designed to withstand high pressure and temperature conditions, specifically at least four times the maximum working pressure. This safety factor is crucial in ensuring the integrity and reliability of the system under operating conditions that may fluctuate or reach extreme values.

CNG systems operate at high pressures, often in the range of 3,000 to 3,600 psi, and proper equipment must be able to handle much more than these operating pressures to prevent failures and potential hazards. The requirement for hoses and connections to be rated for four times the maximum working pressure ensures that there is a considerable safety margin, allowing for unexpected surges in pressure that could occur during normal operation, maintenance, or emergencies.

This standard is part of the best practices for ensuring safety in gas handling and is aligned with industry regulations and guidelines, which prioritize the prevention of leaks, ruptures, and subsequent accidents in CNG systems.