VEAT-009 vacuum drainage separation tank is the core unit of liquid-gas separation in vacuum system. Aiming at the liquid entrainment damage problem of vacuum equipment such as Roots pumps and rotary vane pumps, it achieves 99.9% capture efficiency of droplets ≥5μm through cyclone centrifugation + gravity sedimentation. It is suitable for a wide vacuum range of 1~1000mbar to ensure the stable operation of the vacuum unit and complies with ASME and ISO 6312 standards.