The Leybold D4/D 4 B Trivac are durable vacuum pumps with a superior vapor handling capability. The Leybold D4/D 4 B dual stage rotary vane mechanical vacuum pumps offer an excellent ultimate pressure of 1x10^-4 Torr. These pumps are commonly used for vacuum furnace evacuation, backing turbomolecular pumps, backing diffusion pumps, rotary evaporation, refrigeration system evacuation, epoxy degassing, vacuum sterilization, backing mass spectrometers, freeze drying, vacuum centrifugal applications, vacuum distillation, space research, and other vacuum processes. These Leybold D4/D 4 B vacuum pumps have a pumping speed displacement of 3.4 CFM. These pumps come with a manufacturer's warranty. Parts, oils and accesories for these pumps are located on this website. These Leybold D4B rotary vane vacuum pumps, part number 140081, operate on 1-Phase, 110-120 VAC, 50/60 Hz (other voltage and phase options avaliable on this website).