A float valve system for controlling an amount of liquid in a chamber is disclosed that includes a first valve seat (84) and a second valve seat (86). Liquid enters the chamber in a first direction to the first valve seat and is transferred in a second direction to the second valve seat. First and second actuating members (58, 60) are provided to selectively open and close the first valve seat and the second valve seat, respectively. A first float (52) is coupled to the first actuating member (58) so as to close the first valve seat upon fluid in the chamber reaching a first predetermined level and a second float (54)is coupled to the second actuating member (60) so as to close the second valve seat upon fluid in the chamber reaching a second predetermined level that is different from the first predetermined level.