What device must be incorporated into a liquid dispensing system in an LP-gas refueling installation?

In an LP-gas refueling installation, the incorporation of a breakaway device into the liquid dispensing system is essential. This device serves as a safety mechanism that allows the dispensing hose to separate in the event of a vehicle drive-off or other sudden movement that could otherwise cause damage to the dispensing equipment or create a hazardous situation. The breakaway device helps to prevent spills and reduces the risk of gas leaks, making the installation safer for both operators and the environment.

While purge valves, pressure relief valves, and emergency shut-off devices are all important components of LP-gas systems, they serve different functions. Purge valves are used for clearing out gas or liquid lines, pressure relief valves are crucial for maintaining safe pressure levels within the system, and emergency shut-off devices are designed to quickly stop the flow of gas in case of an emergency. However, none of these components directly address the specific risks associated with accidental disconnection during dispensing, which is precisely what the breakaway device is designed to mitigate.