Wastewater has changed greatly in recent years, with increased solids content from water saving fixtures as well as the prevalence of plastics and man-made fibrous materials in sanitary and cleaning products. In order to ensure reliable operation with today’s challenging wastewater, our new AMS hydraulics rely on closed single-vane impellers with large free passages. Our impellers and volutes have been redesigned at the HOMA R&D center and optimized with the latest flow-simulation software and rigorous lab and field testing. The result: clearly improved hydraulic efficiencies of up to 81%, with a simultaneously low risk of blockage with solids passage that meets or exceed the Ten States Standards. In combination with HOMA's proven submersible-motors, our new AMS hydraulics are setting the standard in economic efficiency and operational reliability.