The PM110W vacuum pump from Moro USA is a commercial-grade vacuum pump designed for tough industrial-duty applications. The liquid-cooled pump has Kevlar vanes, visual inspection ports and a cantered rotor. It can be cooled by water or other liquids. It has 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, which along with low-speed rotation helps extend pump life under rigorous conditions. It weighs 645 pounds, has 29 psi positive-pressure capability, 630 cfm free airflow, can run at 24 inches Hg continuous (28 inches Hg max 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.