The pro-set range of dual voltage vacuum pumps include both single and two stage pump configurations ranging in size from 2 to 12 cfm. All units incorporate heavy-duty dual voltage motors that can operate on either 115 VAC or 230 VAC (50 or 60 Hz) power at the flick of a switch. Steel reinforced carrying handles are over molded for comfort and proprietary hard rubber bases absorb vibration for smoother, quieter operation. All units incorporate integrated gas ballast valves, multi-threaded connection ports and are overload protected.