This open box item may be missing original packaging, missing some small accessories or a lightly used demo unit.
Iso-Valve - Isolates the pump from the system with just a quarter-turn
Gas Ballast - Moisture laden air passing through the pump mixes with relatively dry air so compression does not cause condensation
Two-stage Design - Cleans the system more thoroughly than a single-stage pump; the second stage starts pumping at a lower pressure so you can pull a deeper, ultimate vacuum
Oil Drain Valve - Positioned at the bottom of the oil reservoir and angled for faster, more complete draining