P-VAC filters are designed to protect vacuum pumps. These filters are optimised for effective removal of solid particles and other contamination from the suction side of vacuum pumps, preventing damage to the pump. Two filtration grades are available for P-VAC filters. The "VACP" pre-filter removes bulk liquids and larger solid particles, while the VACM (high efficiency micro-filter) removes very fine impurities that can damage the pump.