Valve cartridge

Claim 1

IN COMBINATION IN A VALVE CARTRIDGE, A SLEEVE MEMBER ADAPTED FOR INSERTION IN A FIXED HOUSING INTO WHICH TWO SEPARATE STREAMS OF LIQUID ARE DISCHARGED, SAID SLEEVE BEING PROVIDED WITH A PLURALITY OF EXTERNAL GROOVES SUITABLE FOR RECEIVING O-RINGS, O-RINGS POSITIONED IN SAID GROOVES AND COMPRISING MEANS FOR SEALING THE SLEEVE AGAINST LEAKAGE WITHIN THE HOUSING, SAID SLEEVE BEING PROVIDED WITH AN INHOLLOW VALVE STEM POSITIONED WITHIN SAID SLEEVE AND THE HOUSING BEING SHAPED ADJACENT SAID OUTLET PORT TO PROVIDE AN ANNULAR CLEARANCE SPACE ABOUT SAID SLEEVE, AND A HOLLOW VALVE STEAM POSITIONED WITHIN SAID SLEEVE AND MOUNTED FOR ROTATION AND RECIPROCATION WITH RESPECT THERETO, SAID STEM INCLUDING A PORTION EXTENDING BEYOND SAID SLEEVE AND SHAPED TO RECEIVE A HANDLE FOR MOVING SAID STEM, AND MEANS WITHIN SAID CARTRIDGE FOR PRESSURE BALANCING SAID STEM, SAID MEANS INCLUDING PARTS DEFINING AN AIR PATH THROUGH SAID VALVE STEM FROM ITS INNER END TO ITS OUTER END AND COMPRISING A CLOSURE PART CLOSING ONE END OF SAID STEM, SAID CLOSURE PART COOPERATING WITH SAID SLEEVE AND HOUSING TO DEFINE A CHAMBER, SAID CLOSURE PART BEING SHAPED TO PROVIDE A PASSAGE THERETHROUGH COMMUNICATING WITH SAID CHAMBER, AND A TUBULAR MEMBER POSITIONED WITHIN SAID STEM AND IN COMMUNICATION WITH SAID PASSAGE, SAID TUBULAR MEMBER EXTENDING THROUGH SAID STEM AND BEING IN COMMUNICATION WITH THE ATMOSPHERE ADJACENT THE END OF SAID STEM HAVING SAID HANDLE RECEIVING PORTION.