The purpose-built FDA-1500 mixer (photo) has a maximum working capacity of 1,500 gal and features a dish-bottom, stainless-steel mix vessel with a 50-psig heating/cooling jacket. The dome-style cover includes multiple charging ports, as well as a hinged manway for major ingredient additions and cleaning. The FDA-1500 is capable of operation under vacuum up to 29.5 in. Hg. The mixer’s independently driven agitators — a 40-hp two-wing anchor and a 150-hp high-speed disperser — are supported from an agitator bridge. The disperser shaft runs up to 695 rpm and is equipped with two 20-in. dia. sawtooth blades. The lower blade is stationary, while the upper blade is attached by means of an adjustable hub, enabling it to be raised or lowered to accommodate various batch volumes and ensure rapid wet-out of solid ingredients. — Charles Ross & Son Co., Hauppauge, N.Y.