What feature must be included in LP-gas installations to manage vapor return?

The inclusion of a vapor return device in LP-gas installations is essential for effectively managing vapor return. This device functions by allowing excess vapor generated within the system to return safely to a designated storage container, ensuring that the system operates efficiently and that there is minimal loss of gas.

Managing vapor return is critical for maintaining the pressure balance within the tank and preventing pressure build-up, which can lead to safety hazards such as leaks or explosions. Moreover, this helps in optimizing the use of the gas, making the system more environmentally friendly and cost-effective.

While vapor recovery systems and pressure regulators also play important roles in LP-gas systems, they serve different purposes. Vapor recovery systems are typically involved in the collection and reuse of vapors from various processes, while pressure regulators manage the flow and pressure of gas but do not specifically facilitate vapor return. Condensation drains, on the other hand, deal with liquid condensate rather than vapor management. Thus, the vapor return device directly addresses the critical need for safe and effective vapor management within LP-gas installations.