The Vacuworx RC line of vacuum-lifting machines includes models RC10, RC12, RC16 and RC20 that can lift and transport all diameters of coated and noncoated pipe. Capacities range from 22,000 to 44,000 pounds. Rotary vane pumps powered by a single-cylinder diesel engine drives the attachments, which can be used with excavators, cranes, wheel loaders and crawler tractors. The units can grip up to 120-foot triple pipe joints that weigh nearly as much as the maximum rating of the lifter, the company says. An electronic ignition, a remote control operating system, and a vacuum reservoir beam that doubles as a spreader bar allow users to safely maneuver materials. Control and alarm systems ensure that if the vacuum falls below a safe working level, audio and visual warnings are activated, and no further lifts are allowed until the vacuum level is built up to reach sufficient working levels. A vacuum storage reservoir allows materials to be held for 15 minutes or more under no power.