is retained in position against a bead 78 on wall 62 by means of a bolt 74 threadably engaged in a nut 75 which is secured to clamp plate 73 a thermal cut out switch 130 fig1 is mounted to the base 66 of pan 63 and has a reset button 132 effectively made accessible by an extender 134 through an opening 136 in bottom 77 float controlled switch 41 thermal cut out 130 and evaporator coil 71 are electrically connected in series not shown and are adapted for connection to a wall socket or the like by a line cord 76 fig2 water flows from preheating coil 21 through feedwater tube 25 into evaporator 11 steam produced in evaporator chamber 63 flows around baffle 69 across the underside of cover part 65 and up around spiral baffle 100 in vapor column 30 into condensing chamber 32 an important advantage of this distillation apparatus due to its construction is that the condensing chamber and storage reservoir are in open communication having common side walls and no intervening lateral walls hot vapors automatically sterilize the storage reservoir with each cycle of operation this means that the air which displaces water withdrawn from the storage reservoir is sterilized and any airborne bacteria viruses and other organisms are destroyed another advantage of this distillation apparatus is that the flow rate of feedwater and cooling water is regulated at a constant.