The PM110W vacuum pump from Moro USA has Kevlar vanes, visual inspection ports and high-efficiency cantered rotor. It can be cooled by water or other liquids, and has high-quality Viton oil seals, direct-feed oil-injected lubrication, and sealed or oil-injected bearings that eliminate grease points. It includes an integrated check valve, changeover valve and automatic oiling system that, along with low-speed rotation, extend pump life in rigorous conditions. The pump weighs 645 pounds, has 29 psi positive pressure capability, 630 cfm free airflow, can run at 24 inches Hg continuous (with 28 inches Hg maximum intermittent) and a suggested tank size between 2,000 to 6,000 gallons. It is available in right-angle and engine-drive packages. 800/383-6304; www.morousa.com.