46.21.00 Screening Equipment
46.21.13 Chain-and-Rake Bar Screens
46.21.11 Climber-type Bar Screens 46.21.13 Chain-and-Rake Bar Screens 46.21.16 Flexible Rake Bar Screens 46.21.17 Catenary Bar Screens 46.21.19 Continuous Belt Screens 46.21.23 Cylindrical Bar Screens 46.21.26 Step Screens 46.21.33 Rotary Drum Screens 46.21.39 Spiral Screens 46.21.43 Band Screens 46.21.46 Disc Screens 46.21.51 Traveling Water Screens 46.21.53 Perforated Plate Screens 46.21.56 Wedge Wire Screens 46.21.57 Element Screens 46.21.71 Trash Raking Equipment 46.21.73 Screenings Washing and Compacting Equipment 46.21.76 Vacuum Screenings Conveying Equipment 46.21.79 Screenings Storage Containers 46.21.83 Septage Receiving Equipment