| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a washing tank device capable of facilitating an indication to the fixing position and facilitating fixing work as well when fixing a fixing member such as a float to a ball chain, and improving productivity in a plant production stage and workability on the spot. <P>SOLUTION: In the washing tank device including a washing tank, a drain valve 14, an operation member 20 for opening the drain valve 14, and a ball chain 22 for connecting them, balls 28B of a different kind in a shape different from the other spherical normal balls 28A are arranged at every fixed interval of a plurality of balls on the ball chain 22 as the balls to be a reference when determining the fixing position of a float 24 to the ball chain 22. <P>COPYRIGHT: (C)2012,JPO&INPIT |
