a flap rotatably provided inside said {TAIL ~ hollow space} of said valve housing, said flap having a first portion disposed adjacent to said {HEAD ~ inlet pipe} and a second portion disposed adjacent to said supply line, said flap further having an axle extending through a front side of said valve housing, said second portion having a distal end which forms a clearance with an inner wall surface of said valve housing inside said hollow space 
a flap rotatably provided inside said { TAIL ~ hollow space } of said valve housing , said flap having a first portion disposed adjacent to said { HEAD ~ inlet pipe } and a second portion disposed adjacent to said supply line , said flap further having an axle extending through a front side of said valve housing , said second portion having a distal end which forms a clearance with an inner wall surface of said valve housing inside said hollow space
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH