The Edwards XDS46i pump has an innovative bearing shield design that isolates the vacuum environment from all forms of lubricant, not only making it totally dry but hermetically sealed.\n\nThe Edwards XDS-46i shield also protects the bearing from any process vapors. nXDS 35i gas ballast allows vapor to be handled and opens up the range of applications to many that were previously unsuited to scroll pumps. The inverter drive controls the motor characteristics and ensures the pump always runs at optimum speed.\n\nEdwards XDS46i pumps also feature the latest in tip seal technology giving significantly longer life between tip seal changes. Integrated inverter drive with auto sensing voltage input delivers optimized pumping performance globally. Edwards nXDS35i pumps are designed to be completely field serviceable. \n\n[Refurbished] Edwards XDS 46i Dry Scroll Vacuum Pump 100-120 V / 200-230 V, Single Phase, 50/60 Hz, A73101983, XDS46i A731-01-983