Dispenser for selectively releasing vapor or liquid from pressure vessel

Claim 1

A DISPENSER FOR A PRESSURE VESSEL CONTAINING LIQUEFIED GAS AND VAPOR UNDER PRESSURE, COMPRISING A VALVE BODY PROVIDED WITH AN INLET PASSAGE EXTENDING UPWARD FROM ITS LOWER END AND HAVING A RESTRICTED UPPER PORTION FORMING A DOWNWARDLY FACING CONTROL VALVE SEAT, THE UPPER END OF THE PASSAGE FORMING AN UPWARDLY FACING MAIN SEAT, A MAIN VALVE CLOSURE NORMALLY ENGAGING SAID MAIN SEAT, SAID BODY HAVING AN OUTLET ABOVE SAID PASSAGE, MEANS FOR RAISING THE MAIN CLOSURE TO CONNECT THE PASSAGE WITH SAID OUTLET, TUBULAR MEANS HAVING A SMALLER DIAMETER THAN THE RESTRICTED PORTION OF SAID INLET PASSAGE AND CONNECTED TO THE BOTTOM OF THE MAIN CLOSURE, SAID TUBULAR MEANS EXTENDING DOWN THROUGH SAID INLET PASSAGE AND PAST THE CONTROL VALVE SEAT AND ADAPTED TO EXTEND DOWN TO A POINT NEAR THE BOTTOM OF SAID VESSEL, AND A CONTROL VALVE CLOSURE ENCIRCLING SAID TUBULAR MEANS AND SUPPORTED THEREBY NORMALLY SPACED FROM SAID CONTROL VALVE SEAT TO PERMIT VAPOR IN THE VESSEL TO FLOW UP PAST BOTH SEATS WHEN SAID MAIN CLOSURE IS RAISED TO LESS THAN ITS MAXIMUM DISTANCE FROM THE MAIN VALVE SEAT, SAID TUBULAR MEANS BEING PROVIDED ABOVE THE CONTROL VALVE CLOSURE WITH AN OUTLET, WHEREBY UPON RAISING THE CONTROL VALVE CLOSURE INTO ENGAGEMENT WITH THE CONTROL VALVE SEAT EXPANDING VAPOR IN THE VESSEL CAN FORCE LIQUID UP THROUGH SAID TUBULAR MEANS AND OUT OF SAID OUTLETS.