Enable dual function with Grohe
I think the new code requires that only one of the functions could be on at a time, but we want to put dual shower heads in the master bath.
I have read that you can modify the hansgrohe. does anyone know if you can do similar thing with grohe groflex?
" Hansgrohe has a universal I valve that works for both bathtub/shower configurations and also for showers that have two showerheads. There's a small pin in them that you can remove (once the inspection is done) if you want water to come out of both sources at the same time. "