Rotary piston vacuum pump     ATEX    piston vacuum pumps     roots vacuum pump     scroll vacuum pump     rotary vane     more..         Europe, Middle East and Africa    North and South America     Asia Pacific BUSCH GVT Ltd - The Forge, Congleton, Cheshire CW12 4HQ, United Kingdom Matthew White, Sales Director, E-Mail, Tel. Fax products: Busch GVT Rotary Piston Pumps are installed world wide for applications such as Vacuum Furnaces, Impregnation, Electronic Manufacture and are internationally recognised as the preferred solution for low ultimate pressure, arduous applications. They are of a robust construction and have an extemely long service life. LEYBOLD Vakuum GmbH - Bonner Str. 498, 50968 Köln, Germany products: - E 250 Single-Stage Rotary Piston Vacuum Pump Typical Applications: - Chemical, metallurgical and electronic vacuum processes - Impregnating, degassing and drying process-es in experimentation systems, in drying cabinets, extrusion etc. - Pressure range down to 4 x 10 E-2 mbar (2.4 x 10-2 Torr) without gas ballast or to 5 x 10 E-1 mbar (3 x 10 E-1 Torr) with gas ballast - Backing pump for Roots vacuum pumps at intake pressure down to 10 E-3 mbar (0.75 x 10 E-3 Torr) DK 200 Two-Stage Rotary Piston Vacuum Pump Typical Applications - For particularly low ultimate pressures - High vacuum stage with degassed oil from a separate oil reservoir - For all chemical, metallurgical and electronic vacuum processes in the pressure range down to 5 x 10 E-4 mbar (3 x 10 E-4 Torr) without gas ballast and 4 x 10 E-3 mbar (2.4 x 10 E-3 Torr) with gas ballast - Backing pump for Roots vacuum pumps - Use as backing pump in pump systems in connection with diffusion, booster-type diffusion and vapor pumps     Keywords     www.vacuum-guide.com