The PM80W Water Series liquid-cooled vacuum pump from Moro USA is a commercial-grade vacuum pump designed for industrial-duty applications. It has 29 psi positive pressure capability and can run at 24 inches Hg continuous (28 inches Hg max intermittent) with a flow rate of 417 cfm. The suggested tank size is 2,000 to 4,000 gallons. It has Kevlar vanes, visual inspection ports and a high-efficiency cantered rotor. It comes with 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 help to extend pump life under rigorous conditions. It is also available in right-angle and engine-drive packages. 800/383-6304; www.morousa.com.