Patent ID: 8109299

Claim:
A filling valve ( 12 ) comprising: a hollow housing ( 21 ); a moving valve assembly ( 24 ) slidingly mounted in the housing ( 21 ), said moving valve assembly ( 24 ) and said hollow housing ( 21 ) together defining a liquid chamber ( 30 ) and a gas chamber ( 32 ); a liquid inlet ( 46 ) for putting said liquid chamber ( 30 ) into communication with a liquid supply pipe ( 14 ); a gas inlet ( 47 ) for putting said gas chamber ( 32 ) into communication with a gas supply pipe ( 17 ); wherein said hollow housing ( 21 ) and said moving valve assembly ( 24 ) together define a medium chamber ( 33 ) located between the liquid chamber ( 30 ) and the gas chamber ( 32 ), and wherein said filling valve ( 12 ) further comprises: a first diaphragm ( 35 ) linking the valve assembly ( 24 ) to the housing ( 21 ) between the liquid chamber ( 30 ) and the medium chamber ( 33 ), and a second diaphragm ( 36 ) linking the valve assembly ( 24 ) to the housing ( 21 ) between the gas chamber ( 32 ) and the medium chamber ( 33 ), and wherein said moving valve assembly ( 24 ) includes a hollow valve rod ( 25 ) provided with a through hole ( 43 ) opening in said gas chamber ( 32 ) at an upper end ( 37 ) of said valve rod ( 25 ).