What is the function of a pressure relief device in a CNG system?

The function of a pressure relief device in a compressed natural gas (CNG) system is to prevent excessive pressure. This is crucial for safety, as CNG systems operate under high pressures, and any unexpected increase in pressure can pose risks such as ruptures or explosions. The pressure relief device is designed to automatically release gas when the pressure exceeds a predetermined limit, ensuring that the system remains within safe operational boundaries. This protective measure can help maintain system integrity and protect both the equipment and the driver during operation.

In the context of CNG systems, it is important to have reliable safety mechanisms like pressure relief devices to avoid unsafe conditions that could lead to catastrophic failures. By managing pressure within safe levels, operators can focus on delivery tasks without the added concern of potential hazards related to high-pressure buildup.