whereby, the position of said lower stop on said front side of said valve housing is adjusted so as to control {HEAD ~ rotation} of {TAIL ~ said flap} inside said hollow space, thereby adjusting the water flow through said clearance when said toilet bowl is refilled 
of
whereby , the position of said lower stop on said front side of said valve housing is adjusted so as to control { HEAD ~ rotation } of { TAIL ~ said flap } inside said hollow space , thereby adjusting the water flow through said clearance when said toilet bowl is refilled
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH