Float valve mechanism

Claim 1

IN A WATER TREATMENT SYSTEM, A TANK CONTAINING A BODY OF SOLID REGENERATING MATERIAL SUPPORTED ON A FORAMINOUS FALSE BOTTOM, A LIQUID UNDERFLOW COMPARTMENT EXTENDING BENEATH SAID FALSE BOTTOM, A FLOAT CHAMBER IN CONTINUOUS COMMUNICATION WITHS SAID UNDERFLOW COMPARTMENT, FLOAT VALVE MECHNISM IN SAID FLOAT CHAMBER, HAVING A CASING NORMALLY SUBMERGED IN LIQUID THEREIN AND DEFINING A VALVE CHAMBER, A FIRST PASSAGE EXTENDING UPWARDLY FROM SAID VALVE CHAMBER TO SAID FLOAT CHAMBER, A SECOND PASSAGE FOR ALTERNATELY SUPPLYING LIQUID TO SAID VALVE CHAMBER AND WITHDRAWING BRINE THEREFROM, UPPER AND LOWER VALVE SEATS SURROUNDING THE UPPER AND LOWER ENDS RESPECTIVELY OF SAID FIRST PASSAGE, A LOWER VALVE CLOSURE MEMBER MOVABLE IN SAID VALVE CHAMBER TO CLOSE SAID FIRST PASSAGE AT SAID LOWER SEAT AGAINST THE INGRESS OF LIQUID INTO SAID FLOAT CHAMBER, A FLOAT BODY CONNECTED TO SAID LOWER VALVE CLOSURE MEMBER FOR ACTUATING IT TO AND FROM SAID LOWER VALVE SEAT IN RESPONSE TO CHANGES IN THE ELEVATION OF LIQUID IN SAID FLOAT CHAMBER, A FIRST ELONGATED VALVE STEM EXTENDING DOWNWARDLY FROM SAID FLOAT BODY IN AXIAL ALIGNMENT WITH SAID FIRST PASSAGE AND UPPER VALVE SEAT, AN UPPER VALVE CLOSURE MEMBER CARRIED BY SAID STEM IN DOWNWARDLY SPACED RELATION TO SAID FLOAT BODY AND DISPOSED TO CLOSE SAID FIRST PASSAGE AT SAID UPPER SEAT AGAINST THE EGRESS OF LIQUID FROM SAID FLOAT CHAMBER, MEANS FOR SECURING SAID UPPER VALVE CLOSURE MEMBER IN VARIOUSLY SPACED RELATION TO SAID FLOAT BODY, AND AN UPPER LEVEL STOP FOR SAID FLOAT BODY DISPOSED AT A PREDETERMINED ELEVATION ABOVE SAID FALSE BOTTOM, WHEREBY SAID LOWER VALVE CLOSURE MEMBER MAY BE ACTUATED TO CLOSE SAID FIRST PASSAGE WHEN THE FLOAT BODY RISES TO AN UPPER LEVEL POSITION DETERMINED BY THE ELEVATION OF SAID UPPER LEVEL STOP, THE SPACING OF SAID FIRST VALVE CLOSURE MEMBER FROM SAID FLOAT BODY BEING DETERMINATIVE OF THE QUANTITY OF BRINE EFFLUENT WHEN THE FLOAT BODY DESCENDS TO SELECTED LOW LEVELS, INDEPENDENTLY OF THE HIGH LEVEL POSITION OF SAID STOP.