The Blastcrete Model D6528 Mixer/Pump is designed for field batching and pumping up to 12 cubic yards per hour. The unit includes our 9 cubic foot hydraulic spiral mixer that hydraulically dumps into our 12 cubic foot receiving hopper. From the hopper, the material is pumped by our D6528 3 inch hydraulic squeeze pump with variable speed from 0-12 cubic yards per hour. This machine is a popular solution for gypsum flooring applications as this unit is more reliable and user-friendly than competitive equipment.