Profile: Clack Corp. distributes residential & commercial/industrial water treatment components, which include brine tanks, pressure vessels and filtration media. We also develop drinking water systems such as reverse osmosis. We offer extrusion blow molders designed to produce custom containers and bottles in single cavity or multiple cavity tooling. We supply accumulator head blow molder, which is capable of producing industrial parts with shot sizes up to 50 pounds and parison diameters up to 24 inches.