... Easy start-up Description of Vacuum pumpThis series pump is used to seal the gas container extraction ... the booster pumps, diffusion pumps, molecular pumps pump the first stage, the maintenance of pumps, pre ... chemicals, pharmaceuticals, universities and other departments.Main features of rotary vane vacuum pump1. Small size, light weight, low ... /380220/380Weight(kg)162024 2XZ-4 rotary vacuum pump