Cam controlled anti-siphon mixing valve

Claim 1

IN VALVE CONSTRUCTION OF THE CLASS DESCRIBED, IN COMBINATION, A BODY, A PAIR OF HORIZONTALLY SPACED INLET CHAMBERS THEREIN, A FLUID SUPPLY LINE LEADING TO EACH, A MIXING CHAMBER ABOVE SAID INLET CHAMBERS, AN OUTLET THEREFROM, A PASSAGEWAY LEADING UPWARDLY FROM EACH INLET CHAMBER TO THE MIXING CHAMBER, A SEAT AT THE LOWER END OF EACH PASSAGEWAY, A SHUT-OFF AND ACTUATING MEMBER FOR EACH SAID PASSAGEWAY, SAID MEMBER INCLUDING A SEAT PORTION CO-OPERABLE WITH SAID SEAT BY FLUID PRESSURE TO PREVENT THE FLOW THERETHROUGH, A SEAT AT THE UPPER END OF EACH SAID PASSAGEWAY, AN ACTUATING PART FOR EACH MEMBER INCLUDING MEANS EXTENDING THROUGH EACH PASSAGEWAY, EACH SHUT-OFF AND ACTUATING MEMBER INCLUDING A SHUT-OFF SECTION AT THE UPPER END ADAPTED TO CO-ACT WITH THE SEAT AT THE UPPER END OF THE PASSAGEWAY TO SHUT-OFF BACK FLOW THERETHROUGH WHEN SIPHON ACTION IS INITIATED, AND AN OPERATING DEVICE HAVING MEANS CO-OPERABLE WITH SAID PARTS FOR SEPARATE AND SIMULTANEOUS ACTUATION THEREOF TO UNSEAT THE SAME TO FACILITATE FLUID FLOW TO THE MIXING CHAMBER AGAINST NORMAL FLUID PRESSURE EXERTED ON THE FLUID SUPPLY LINE LEADING TO SAID INLET CHAMBERS.