... motors are covered by stainless steel. 7.Top sealing head attached: material inlet, manhole,sight glass with scraper, sight light ... aseptic air breather, 2 backup holes. 8.Body of bottom attached:Steam inlet with pneumatic valve, safety valve, pressure gauge, ... heating or chilling is controlled by temperature controller. 9.Bottom attached: water inlet with pneumatic valve, chilling water outlet valve, ...