ROCKFALT Screw Washers are specifically designed to ensure the highest quality sand production through efficient washing, classifying and dewatering.

Our heavy-duty designs provide superior release of deleterious materials from targeted sand fractions and efficiently remove them from the overflow slurry. Shaft rotation and tight clearances, combined with multiple auger liner configurations, provide sand abrasion on the grit, resulting in unsurpassed cleanliness in the finished product.