The Pipemaster high-pressure hose-rotating system from Hammelmann is used to remove deposits from the inside of pipes, including those with bends and vertical sections. A high-pressure supply hose line is fixed between the pump and the rotary joint on the hose-rotating unit. A second hose is connected to the rotary joint and runs via the deployment unit into a protective hose to the positioning device at the work piece. Actuating the control lever causes the hose to start rotating, which produces the forward motion. Changing the angle of the three wheels that press onto the hose will cause the hose to move forward or backward. The rotating unit is driven by compressed air at 60 psi and comprises a pneumatic motor with gearbox, a pneumatic maintenance unit, the high-pressure rotary joint and a pneumatic control system, all mounted on a three-wheel trolley. 800/783-4935; www.hammelmann.com.