oiill-sealed Rotary vane vacuum pumps are widely used traditional vacuum pumps in research and production, can be used independently, as well as working as backing pumps for molecular pumps or diffusion pumps. direct driven rotary vane pumps areavailable asone andtwo-stageversions,coverthe rangefrom desktop lab pumps to production line pumps, with low noise and stableworking temperature for common voltages and frequencies, long lifespan, and outstanding reliability for chemical applications. various application areas may include vacuum distillation, vacuum filtration ,vacuu m inspection ,vacuu m freeze drying, vacuum coating, vacuum leakdetection,vacuum packaging, vacuum adsorption, etc.