The RVVAC D series two-stage rotary vacuum pumps are available in sizes ranging from 4 to 65 cubic meters per hour, and features include low sound levels, high drain rates, easy handling, easy installation, easy operation, Equipped with an internal oil pump for lubricating components, blast furnace gas and a one-way automatic anti-suction valve. RVVAC D pumps have a wide range of laboratory, research and industrial applications in the chemical, pharmaceutical, food, metallurgy, mechanics, electronics, refrigeration and air conditioning systems, automotive, aerospace, and all kinds of laminar systems, vacuum ovens and dryers. And ... cover. RVVAC D pumps as the main pump in low and medium vacuum systems, as well as a backup pump for Rothic pumps (ROVAC series), Diffuser (DIVAC series), Turbomolecular and other high vacuum systems Ultra High Vacuum.