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Schreiber Grit Classifier

Schreiber’s Grit Classifier washes and dewaters the slurry from grit removal systems. It’s easy handling and grit transferring features make final disposal a simple process. The grit classifier is effective over a wide range of grit particle sizes, including sugar sand.

When the grit slurry is transferred to the grit classifier, the inlet flow is directed diagonally downward. As grit settles, a shaftless screw carries the grit from the bottom of the hopper to the discharge, further washing and dewatering it. Decanted water flows over a weir and returns to the waste stream, while the dewatered grit travels into a container for disposal. Operators can get easy access to the grit through a hinged, lightweight hatch and a hinged weir box.

Fully enclosed and constructed of 304 stainless steel for corrosion protection and a long service life, Schreiber’s Grit Classifier is equipped with an easy-to-remove 304 stainless steel replaceable liner. A hardened steel shaftless screw requires no submerged bearing, resulting in low maintenance. The Grit Classifiers are available in two sizes: a 12” diameter for flow rates up to 150 gpm, and a 20” diameter for flow rates of up to 300 gpm. Options include motors rated from TEFC to Class 1 Division 1, internal heating elements, flexible direction discharge, and multiple inlet configurations.


  • Wastewater headworks
  • Grit dewatering

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Features & Benefits

Water drop

Stainless steel construction (304 ss standard, 316 optional)
provides protection again corrosion

Reduced Maintenance

Fully enclosed unit
helps protect the unit to increase life span and reduce maintenance


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