Flow control apparatus

Claim 1

IN A FLOW CONTROL SYSTEM FOR USE WITH A WATER TREATMENT APPARATUS HAVING A TREATMENT TANK AND A REGENERANT TANK, THE COMBINATION COMPRISING; AN EJECTOR HAVING A RAW WATER INLET, A REGENERANT INLET, AND AN EJECTOR OUTLET; A REGENERANT CONTROL VALVE MEANS DEFINING A FLOAT CHAMBER AND HAVING A REGENERANT LINE COMMUNICATING WITH THE FLOAT CHAMBER AND ADAPTED FOR COMMUNICATING WITH THE REGENERANT TANK, A REGENERANT FEED PASSAGE COMMUNICATING WITH THE FLOAT CHAMBER AND WITH THE REGENERANT INLET OF THE EJECTOR, AND A REFILL PASSAGE FOR SUPPLYING LIQUID TO THE FLOAT CHAMBER AND TO THE REGENERANT LINE; AN AIR CHECK FLOAT MEMBER IN SAID FLOAT CHAMBER OPERABLE TO CLOSE SAID REGENERANT FEED PASSAGE AND BLOCK FLOW OF REGENERANT FROM THE FLOAT CHAMBER WHEN THE LIQUID IN THE FLOAT CHAMBER DROPS TO A PRE-SELECTED LEVEL; CHECK VALVE MEANS IN SAID REGENERANT FEED PASSAGE OPERABLE TO OPEN FOR FLOW FROM THE FLOAT CHAMBER AND TO CLOSE TO PREVENT RETURN FLOW; A MAIN VALVE MEANS CONNECTED TO SAID RAW WATER INLET AND SAID OUTLET OF SAID EJECTOR AND HAVING A SUPPLY INLET, AND TREATED WATER OUTLET, FIRST AND SECOND TANK CONNECTING PASSAGES ADAPTED FOR CONNECTION TO A TREATMENT TANK, A DRAIN OUTLET AND A REGENERANT TANK REFILL PORT CONNECTED TO SAID REGENERANT REFILL PASSAGE; SAID MAIN VALVE MEANS INCLUDING VALVE ELEMENTS MOVABLE TO DIFFERENT POSITIONS AND OPERABLE IN ONE POSITION TO PASS FLUID FROM THE SUPPLY INLET TO THE RAW WATER INLET OF THE EJECTOR TO ONE OF SAID TANK CONNECTING OUTLET OF THE EJECTOR TO ONE OF SAID TANK CONNECTING PASSAGES, SAID MAIN VALVE MEANS INCLUDING MEANS OPERABLE IN ONE OTHER POSITION OF SAID VALVE ELEMENTS TO PASS FLUID TO SAID REFILL PORT TO REFILL THE REGENERANT TANK; AND TIMER CONTROLLED MEANS FOR MOVING SAID VALVE ELEMENTS BETWEEN SAID DIFFERENT POSITIONS OPERABLE TO CONTROL THE TIME DURING WHICH SAID ELEMENTS ARE IN SAID ONE OTHER POSITION TO REGULATE REFILL OF THE REGENERANT TANK.