The continuous-duty AC5 fan-cooled vacuum pump from Moro USA is capable of a continuous vacuum of 22 inches Hg with a free flow rate of 460 cfm capable of pumping nonvolatile liquids and sludge from long distances. The suggested tank size is 2,000 to 6,000 gallons. It has an integrated check valve, changeover valve, automatic oiling system, industrial-duty bearings, Viton seals and high-flow-rate asbestos-free spark-proof vanes. It doesn’t require a liquid cooling system. Dual cooling fans keep it operating efficiently even in the most rigorous conditions. The pump includes 4-inch flange connections and is available in preassembled pump packages complete with stand, secondary, oil catch and drive, and gearbox, and can be hydraulic, pulley or engine driven. 800/383-6304; www.morousa.com