The VRP series line of dual stage rotary vacuum pumps combine high performance with excellent value. These reliable, heavy duty vacuum pumps include an integrated cylinder structure design, an innovative forced oil circulation system, automatic oil anti suck-back valve and adjustable gas ballast. Suitable for a wide variety of application in research, science and industry. These pumps can be used for analytical systems, backing pumps, vacuum ovens, crystal vacuum coating, sputtering systems, plasma cleaning, freeze drying, electron microscopes and backing pumps for turbo pumps, diffusion pumps and roots pumps. Due to excellent build quality, the VRP pumps exhibit low vibration and quiet operation. Available with 4, 8 and 16m³/hr pumping capacity.