A system (50) of float valves for controlling an amount of liquid in a chamber (16), comprising: a first valve seat (84) adapted to receive fluid from outside the chamber in a first direction through an entrance (80)； a second valve seat (86) separated from the first valve seat in a second direction, the second valve seat being coupled for fluid passage to the first valve seat and adapted to receive fluid from the first valve seat； a fluid conduit (82), which extends between the first valve seat and the second valve seat and adapted to transfer fluid from the first valve seat to the second valve seat in the second direction； a first actuating member (58) adapted to selectively open and close the first valve seat； a second actuating member (60) separated from the first actuating member in the second direction, the second actuating member being adapted to selectively open and close the second valve seat； a first float (52) coupled to the first actuating member to close the first valve seat when the chamber fluid reaches a predetermined first level； and a second float (54) coupled to the second actuating member to close the second valve seat upon reaching the chamber fluid a second predetermined level； wherein the fluid conduit is formed of a flexible diaphragm (66) extending between the first valve seat and the second valve seat, the diaphragm being adapted to flex after actuation of the first actuating member and the second member of acting.Un sistema (50) de válvulas de flotador para controlar una cantidad de líquido en una cámara (16), que comprende: un primer asiento de válvula (84) adaptado para recibir fluido desde el exterior de la cámara en una primera dirección a través de una entada (80)； un segundo asiento de válvula (86) separado del primer asiento de válvula en una segunda dirección, estando el segundo asiento de válvula acoplado para paso de fluido al primer asiento de válvula y adaptado para recibir fluido desde el primer asiento de válvula； un conducto
