a lever member disposed outside said valve housing and having a first end portion extending between said upper and lower stops, {TAIL ~ an intermediate portion} connected to said axle of said flap and a second end portion provided with a counterweight, said counterweight rotating said lever member so that said first end portion normally abuts against said upper stop so as to place said flap in {HEAD ~ a first position} wherein water from said inlet pipe is directed to said supply line; and 
a lever member disposed outside said valve housing and having a first end portion extending between said upper and lower stops , { TAIL ~ an intermediate portion } connected to said axle of said flap and a second end portion provided with a counterweight , said counterweight rotating said lever member so that said first end portion normally abuts against said upper stop so as to place said flap in { HEAD ~ a first position } wherein water from said inlet pipe is directed to said supply line ; and
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