Ref. page 3 figure 1 of the the above .pdf document, wherein it states the
pressure switch and tank must not be more than 10 ft. apart.

I vaguely recall the tanks do a sort of water hammer arrestor duty too,
reduces or eliminates water hammer/pulsing,, and a chattering pump.
Water is a powerful thing and has weight/inertia forces, that can bust stuff
..