The Spiral Stack™ eXtreme is our most exciting pump yet. For corrosive, caustic, and chlorinated chemicals, or food-grade liquids and slurries. The Spiral Stack™ eXtreme offers higher head pressures and case pressures than our 03 or 15, with precision dispensing in the GPD to GPM range. Built with the same die-hard construction that you know and love. Coming soon.