Assmann Corporation now offers the 400-gallon polyethylene non-pressure piston bin for viscous products up to 500,000 centipoise. This new piston bin is a sealed and closed-looped system for protecting materials from air, moisture, dirt and other contamination. These piston bins offer internal transport of viscous materials such as grease, axle grease, cooking lard for bakeries, mayonnaise, molasses and other FDA materials. The bins are also used for transporting products for pharmaceuticals, wineries, breweries and liquor/distillers. The 400-gallon piston bins feature a rugged, durable design, forklift pockets for easy moving and are reusable and returnable containers. The bin is a pump operated system that is filled and discharged through the same 3-inch bottom valve.