Quick Take-Apart AirlockPrater Industries, Inc. Request More Info Fill out the form below to request more information about Quick Take-Apart AirlockMore From Prater Industries, Inc.Mega-MillDCS AirlocksPrater-Sterling grinderPrater-Sterling makes rotary air locks, hammermills, sifters, grinders, automated systems for particle size reduction, management, feeding & metering.Prater-Sterling grinder