Roto-Disc®, Inc. manufactures heavy-duty spherical valves that do not gum-up, jam or leak, even under the worst applications. Ideal for sticky, gummy or abrasive powders, slurries, pellets, granules or chips. Provides tight sealing and resists abrasive wear. The Roto-Clean® sanitary version quickly assembles and disassembles without tools and is made of all FDA compliant materials for sanitary environments. Inflatable seal Roto-Flate® provides a bubble-tight sealing up to 150 PSI and full vacuum. Available in sizes 3-24". High temperature options available. Perfect replacement for leaking ball, knife or butterfly valves. Food, pharmaceutical, chemical, and many other industries served.