... diameter 70mm,inner diameter 54mm6WeightTank bottom unit mechanical pump7Flowing baffleElectronic control Pneumatic baffle,material ,stainless ... be produced according to user's requirements Vacuum exhaust unit technology parameters1,NO.ItemsTechnical requirement1Vacuum ... control, safe interlock, leakage automatic protection5Composite vacuum machineProduced In tsinghua2,Quotation diameter 58*40pcs* ...