The Blastcrete Model D3522 Attachment is our solution for hot epoxy grouting contractors that currently own hydraulic power units. Simply couple the D3522 Attachment to your hydraulic power and this pump offers variable speed pumping from 0-6 cubic yards per hour and delivers up to 400 PSI pumping pressure. These are the most simple and safe epoxy pumps on the market to maintain and operate. Since no epoxy material comes in contact with the moving parts of the pump, you will be pleased with the life of this machine.