EXPANSION FLOAT VALVE ARRANGEMENT

A float valve arrangement (13) is described, the float valve arrangement (13) com- prising a housing (14,15), a first liquid port (8), a second liquid port (9), a balance gas inlet (6), and a balance liquid inlet (7), wherein the balance gas inlet (6) and the balance liquid inlet (7) are connected to a float chamber (5) in which a float (4) is arranged, the float (4) acting on a valve (3) outside the float chamber (4), the valve (3) being arranged between the first liquid port (8) and the second liquid port (9). The valve (3) comprises a cylindrical inner valve element (20) comprising a hollow (23) and a cylindrical outer valve element (21) rotatable around the inner valve element (20), wherein the float (4) acts on the outer valve element (21) and the first liquid port (8) is connected to the hollow (23) of the inner valve element (20). Such a float valve arrangement should handle high pressure differences with little effort. To this end, the valve (3) is arranged within an expansion chamber (26).