The industrial three-phase vacuum cleaner is a compact and versatile machine that can operate for long periods even in the most demanding applications. It shares the same basic characteristics as the ONE103OIL but differs in terms of the type of vacuum pump and liquid discharge system. The vacuum cleaner is equipped with a three-phase vacuum pump, automatic liquid stop system, and reverse flow valve. The latter device allows for the air blown by the pump to push the liquid sucked out of the container, ensuring high flow rates and head, even without the use of a secondary ejection pump.