What is a potential consequence of not having excess flow valves in a gas piping system?

In a gas piping system, the absence of excess flow valves can significantly increase the risk of a hazardous situation, including the potential for an explosion. Excess flow valves are designed to automatically close when they detect an unusually high flow of gas. This function is crucial for preventing gas from continuing to flow unchecked during a leak or rupture in the system. Without these safety devices, a leak could lead to a rapid accumulation of gas in an enclosed space, creating a highly flammable environment. If the gas concentration reaches an explosive limit and is then ignited, it can result in a devastating explosion.

Proper safety measures, including the installation of excess flow valves, are essential to mitigate risks associated with gas systems. This safety feature is a critical component in maintaining the integrity of the system and ensuring the safety of individuals and property nearby.