PROBLEM TO BE SOLVED: To provide a division port gate enabling performance of easy water level adjusting work. SOLUTION: This division port gate (10) has a circle door body (12) whose both edges are held in the grooves of a pair of guide rails (18) which are each set along both sides of an opening of a division port, a lever (14) whose one end is firmly fixed to the door body and which is used for moving the door body up and down, and a pair of door body engaging means (16) which are provided in places opposite to the diametral direction of the one surface of the door body. The division port gate (10) is so formed that the door body is arranged in a place to be fixed when fixing the division port gate, the lever is inclined to one direction in the place, and the door body engaging means are inserted into the grooves so as to fix the door body. COPYRIGHT: (C)2008,JPO&INPIT
