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The Unparalleled Sewage Grinding Workhorse of Collections Systems

30K Open-channel Muffin Monster dual-shafted sewage grinders are engineered as the ultimate solution for reducing tough solids to small particles. Since 1973, these grinders have been trusted by collections and treatment plant operators to reduce troublesome solids that can clog pumps, valves and treatment equipment.

The 30K Open-channel Muffin Monster fits within wastewater channels or can be affixed onto wet well walls at pump station inlets. In wet well applications, stainless steel mounting frames are custom designed and fabricated to meet the installation’s requirements.

Meadowlark Inlet Inline 40K


  • Prevents unplanned equipment maintenance at pump stations with high solids loading
  • Eliminates emptying pump station trash baskets, reducing manual labor along with the related odors from collected solids waste
  • Keeps pumps and valves clear and operating efficiently to minimize maintenance costs, shorten run cycles and reduce energy consumption
  • Separates organic material from debris for cleaner screenings


  • Dual-shafted, slow-speed, high-torque grinder easily shreds the toughest solids, including rags, rocks, wood, wipes, hair, clothing, plastic and other debris
  • Helical cutter stacks of individual, hardened, alloy steel cutters efficiently grab and shred solids with scissor-like precision
  • Available Wipes Ready® Technology shreds wipes and rags bi-directionally into small pieces, preventing materials from reweaving in the waste stream where they can form long strips
  • Custom frames for easy channel or wet well installation
  • Smart controller with load sensing control system optimizes performance and protects against jams


  • Fits channels up to 12 inches (305 mm) wide
  • Handles flow rates from 370 – 5,620 gpm (84 – 1,277 m3/hr)