Abstract: A process consists of subjecting the mass of loose product to be rehydrated to a treatment with a hot fluid, for an adjustable preset time interval, and then with a cold fluid, for another preset time interval, and of and successively repeating the treatment with hot fluid and with cold fluid until the preset rehydration percentage is attained. The apparatus includes an assembly introducing the product into a tank containing hot water and having a screw feeder which feeds the product to a discharge collector. Transfer means, in the discharge collector, conveys the product to a cooling assembly.

Abstract: Dressing or preserving liquid filling unit for vacuum filling machines, comprising a valving member for the introduction of dressing liquid, formed by a lower body sealingly associable with a can or the like, and an upper body which is connected to the lower body and pivotable relatively thereto to take a variety of operational positions. The rotation of the upper body with respect to the lower one is accomplished through a cam following element which is connected to a rod extending axially from the upper body, which engages with a camming path correspondingly arranged along the processing path followed by cans to be filled.