The RMX-5000 Mixer/Pump boasts 15 percent more pumping pressure than any other machine of its size on the market. The unit is one of five mixer/pumps in the company’s lineup for refractory, shotcrete, and concrete repair. The highly efficient mixer/pump is available with either a spiral mixer or a paddle mixer with a planetary gearbox. The spiral mixer is for conventional shotcrete while the paddle mixer provides the torque necessary for more demanding applications such as refractory, where materials are more difficult to mix. It produces up to 5 cubic yards per hour. Blastcrete Equipment Company.