| 摘要 |
PROBLEM TO BE SOLVED: To simply manufacture covers, and to easily install the covers on a flush valve by collecting cutout parts for taking out a water supply pipe and a drain pipe of the flush valve into one in the covers composed of two cover members having no longitudinal directionality. SOLUTION: An installing part of an upper cover 3 and a lower cover 2 is formed in line symmetry in the longitudinal direction and the lateral direction of the respective covers 3, 2, and even if the lower cover 2 rotates by 180 degrees, the upper cover 3 can be installed still in its state. Cutouts 76, 77 for forming an opening 60 are respectively arranged on the left side of a front cover 61 and a rear cover 62 of the lower cover 2, and semicircular cutouts for forming an inserting hole for inserting a manual operation member are respectively arranged on the right side. The cutout parts 76, 77 are collected into one, and taking-out of a water supply pipe 56 and a drain pipe 57 is formed as a single opening 60 to thereby simply manufacture the front/rear covers 61, 62 of the lower cover 2 as well as to easily install the covers on a valve body part 17.
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