What is the purpose of overflow pipes in vapor recovery systems?

The purpose of overflow pipes in vapor recovery systems is primarily to prevent liquid from overfilling and to provide an emergency venting option. In a vapor recovery system, maintaining proper levels of liquid is crucial to ensure efficient operation and prevent spills, which can lead to environmental hazards and regulatory violations.

Overflow pipes are designed to direct excess liquid away from the system to a safe location, thereby avoiding potential overflow situations that could compromise the system's function or pose safety risks. Additionally, in scenarios where pressure builds up due to increasing liquid levels, overflow pipes can serve as a venting mechanism, allowing pressure to release without causing damage to the system or creating hazardous conditions.

The focus on preventing overfilling highlights the importance of safety and regulatory compliance, making this function essential to the integrity of vapor recovery systems.