... in oil pump,good pressure lubrication Exhaust filter to collect oil mist for DV double stage rotary vane vacuum ... rough and medium vacuum,also as backing pumps in pump combinations with Roots pumps, diffusion pumps , molecular ... /h) allows every customer to select the right pump for his particular needs.APPLICATIONSemiconductor, solar industry,Vacuum ... ×240×430 DV double stage rotary vane vacuum pump