The Vmax VFD oil sealed vacuum systems are liquid ring vacuum pump systems using oil as the seal liquid. The systems (in capacities ranging from 150 - 4500 CFM) operatie with a Variable Frequency Drive which reduces the speed of the vacuum pump when demand for vacuum decreases, resulting in substantial savings.

Upgrade your system:
VFD's are also affordable and easy to install on existing systems and are one of the most cost-effective ways to maximize efficiency and reduce operating costs.