Inside a paint‑shop line where vehicle bodies move through solvent‑based coating stations, the compact ejector provides a constant suction stream that pulls overspray and volatile compounds from the booth while the conveyor is running. When the line stops for a shift change, the ejector’s built‑in feed function continues to draw air through the system, preventing the buildup of vapors that could otherwise condense on the next body entering the booth. This continuous draw also keeps the downstream filter elements from becoming saturated, allowing a rapid restart without a purge cycle. Because the device is normally closed, it only activates when the plant controller signals a vacuum demand, reducing unnecessary air consumption during idle periods. In addition to paint booths, the same principle is applied in engine‑assembly stations where coolant and oil mist must be removed from the work area; the ejector maintains a clean environment and protects sensitive sensors from contamination. By ensuring a stable vacuum even during shutdown, the component helps automotive manufacturers keep line throughput high and maintain workplace safety.