Vacuum Pump directly-connected mechanical sealed coat disposal inside the pump cavity. ISO9001:2000, ISO14001:2004, CE. Vacuum PumpImpeller of the Vacuum Pump is made of excellent alloy copper,air inlet equipped with infiltration valve if required. The Vacuum Pump are widely used in Foodstuff,Medicine Package, Disinfectant, Printing, Dyeing, Weaving, Plastic Industry, Vacuum Pump's Merits:simple ...