LMVseries come with a retractable Nozzle made in Stainless steel is Verticaltype Nozzle Type Vacuum Sealer. Comes with a vacuum Pump inside and aretractable Nozzle system made of stainless steel Suitable for large size& heavier weight packing. Its head parts can be adjusted up & down.Pump is non-oil filling for dry packaging.Air control-Press the Foot Switch,Vacuum & sealing will be finished. Operation is so easy. Operationrequires an outside compressor. Customer needs to prepare the air compressor6-7kg/cm2. The gas flush/purge is an optional feature.