... the booster pumps, diffusion pumps, molecular pumps pump the first stage, the maintenance of pumps, pre-titanium pump pumping pumps. Can ... , electronics, chemicals, pharmaceuticals, universities and other departments.Main features of rotary vane vacuum pump1. Small size, light weight, low noise2. Equipped ... .370.55Voltage(v)220220/380220/380Weight(kg)162024 2XZ-4 rotary vacuum pump