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Claim 1

A PROPORTIONING VOLUME CONTROLLING VALVE COMPRISING THE COMBINATION OF (A) A VALVE BODY HAVING A LONGITUDINALLY EXTENDING CYLINDRICAL FIRST BORE PROVIDED WITH INLET PORTS IN OPPOSITE SIDES THEREOF, (B) A SLEEVE MOUNTED IN SAID FIRST CYLINDRICAL BORE HAVING A SECOND CYLINDRICAL BORE THEREIN, SAID SLEEVE HAVING INLET PORTS THEREIN WHICH ARE OFFSET WITH THE SPECT TO EACH OTHER AND ARE IN ALINEMENT WITH THE INLET PORTS IN SAID BODY PORTION, SAID SLEEVE HAVING SEALING MEANS ON THE EXTERIOR SURFACE THEREOF TO MAINTAIN IT IN WATER-TIGHT ENGAGEMENT WITH SAID FIRST BORE, AT LEAST ONE OF SAID SEALING MEANS SEPARATING SAID INLET PORTS, (C) A PISTON MOUNTED ON THE END OF A SHAFT, ROTATABLY AND LONGITUDINALLY SLIDABLY ADJUSTABLE IN SAID SECOND BORE, SAID PISTON HAVING A BOSS ON THE INNER END THEREOF OVERLYING SAID INLET PORTS, SAID BOSS HAVING A PORTION CUT AWAY SO THAT ON ROTATION AT LEAST A PORTION OF EACH PORT WILL BE EXPOSED, AT LEAST ONE AXIALLY SPACED VENT THROUGH SAID BOSS, A RAISED CIRCULAR LIP ON THE FACE OF SAID PISTON, (D) A CAP CLOSING THE FRONT OF SAID VALVE BODY AND HAVING A RAISED VALVE SEAT PORTION MOUNTED ON THE INNER SURFACE OF SAID CAP AND IN WATER-TIGHT ENGAGEMENT WITH SAID VALVE BODY, AN EXHAUAST PORT IN THE CENTER OF SAID VALVE SEAT PORTION, WHICH PORT IS CLOSED BY SAID RAISED LIP ON THE FACE OF SAID PISTON WHEN IN THE CLOSED POSITION, AN EXHAUST CHAMBER FOR MIXED WATER COMMUNICATING WITH SAID EXHAUST PORT BEHIND SAID RAISED VALVE SEAT PORTION HAVING LATERAL DISCHARGE PORTS FROM SAID DISCHARGE CHAMBER, (E) AND AN OPERATING MEANS COMPRISING A SINGLE LEVER PIVOTED ON SAID SHAFT IN THE REAR OF SAID PISTON AT THE LOWER END OF SAID LEVER, A LOWER PIVOT ON THE END OF SAID LEVER TO IMPART TO SAID PISTON THROUGH SAID SHAFT LONGITUDINAL AND ROTATIONAL MOTION.