Unisteri sterilizers are equipped with chambers made entirely of 316L stainless steel for superior durability. The chamber is constructed in accordance with ASME Section VIII, Division 1, for unfired pressure vessels and so stamped for 45 psig/144°C design temperature and full vacuum. The chamber is rectangular in design and jacketed. Steam baffles are equipped in the chamber to minimize wetting by condensate and ensure proper steam distribution within the chamber. The chamber floor is slopped toward the drain to allow for complete drainage of condensate.
The chamber jacket is constructed of 316Ti stainless steel for superior corrosion resistance to plant steam. The jacket is utilized to preheat the chamber prior to sterilization and aids in reduction of condensate. The heated jacket also helps during the drying phase of the cycle for textiles or other porous loads. As an option, the jacket can be utilized to aid in cooling liquid loads by applying cooling water to the jacket.