I really want to install a hygienic sprayer, but my installation is completely hidden in the wall behind the tile, with only the flush button and a rigid, concealed pipe leading to the toilet bowl exposed. There’s no access to the fill valve at all.
Has anyone solved this problem?
Where do they even get the water for the hose in these cases? Do they run a pipe from the nearest sink through the entire wall, or are there ways to connect to the concealed tank through the inspection window under the button?