The 753 Series vacuum pump from Wallenstein Vacuum Pumps incorporates extra-wide vanes that allow up to an inch of wear, resulting in longer service life and lower maintenance costs. It provides 422 cfm airflow at 1,200 rpm operation and precision machining for vacuum levels up to 28 inches Hg. Options include air-, liquid- or dual-cooling systems where air injection is combined with liquid cooling. A pump flushing port is included on the top valve for convenient routine maintenance. The quick-access housing endplate allows for easy internal inspection with no bearings to pull. Oil lubrication is via a mechanical piston pump driven by shaft rotation or available with a sight feed valve oil regulator system that uses vacuum/pressure to draw oil with no moving parts. 800/801-6663; www.wallenstein.com.