MV VisiFlow® oil filtration system extends life of mechanical vacuum pumps using fluids such as Fomlin, Krytox and Halovac in highly corrosive applications by up to 200%. Available with two extra filter assemblies to instantly replace contaminated ones in-line, modular system has a metal tray with a built-in drip pan and handle. A variety of replaceable filter elements are offered. MV Products Div. Mass-Vac, Inc. 247 Rangeway Rd., P.O. Box 359 North Billerica, MA, 01862-0359