Multiple port valve with selective closing operator

Claim 1

AN IMPROVED VALVE UNIT FOR CONTROLLING FLUID FLOW, SAID UNIT COMPRISING AN ELONGATED VALVE BODY PROVIDED WITH A LONGITUDINALLY EXTENDING INTERNAL PASSAGEWAY, SAID PASSAGEWAY COMMUNICATING WITH A FIRST PORT FORMED IN SAID VALVE BODY, SAID PASSAGEWAY COMMUNICATING WITH A PLURALITY OF AT LEAST THREE SECOND PORTS LATERALLY DISPOSED AND FORMED IN SAID VALVE BODY AT A LOCATION LONGITUDINALLY SPACED FROM SAID FIRST PORT, SAID PASSAGEWAY CONSTDRUCTED AND ARRANGED TO FREELY CONTACT A FLUID BETWEEN SAID FIRST AND SAID SECOND PORTS, A MOVABLE VALVE ELEMENT SLIDABLY FITTED IN SAID PASSAGEWAY FOR A FIRST TYPE MOVEMENT BETWEEN A FIRST POSITION AND A SECOND POSITION LONGITUDINALLY SPACED FROM SAID FIRST POSITION AND FROM SAID SECOND PORTS, SAID VALVE ELEMENT MOUNTED FOR A SECOND TYPE MOVEMENT IN SAID PASSAGEWAY TO SELECTIVELY BLOCK AT LEAST ONE OF SAID SECOND PORTS WHEN IN SAID FIRST POSITION, AND A VALVE ELEMENT ACTUATING MEANS OPERATIVELY CONNECTED WITH SAID VALVE ELEMENT FOR SELECTIVELY MOVING SAID ELEMENT IN THE PASSAGEWAY SUFFICIENTLY IN BOTH TYPES OF MOVEMENT FROM ONE POSITION IN THE PASSAGEWAY TO ANOTHER POSITION IN THE PASSAGEWAY OPERATIVELY BLOCKING A PREDETERMINED COM-