1. APPARATUS FOR TRANSFERRING AND DISPENSING FLUID UNDER PRESSURE COMPRISING A CASING HAVING A FRONT PANEL PROVIDED WITH A SIGHT OPENING, A TRANSPARENT RESERVOIR MOUNTED IN SAID CASING ADJACENT SAID SIGHT OPENING TO RENDER THE CONTENTS OF SAID RESERVOIR VISIBLE FROM THE EXTERIOR OF SAID CASING, SAID RESERVOIR HAVING AN INLET AT ITS UPPER END AND AN OUTLET AT ITS LOWER END, MEANS ON SAID CASING AT THE BACK THEREOF AND ADJACENT SAID RESERVOIR FOR MOUNTING A CONTAINER HAVING FLUID UNDER PRESSURE STORED THEREIN AND PROVIDED AT ONE END WITH A VALVED OUTLET INCLUDING A TUBULAR STEM, SAID MEANS INCLUDING A TUBULAR ELEMENT FOR RECEIVING AND ENGAGING THE STEM OF THE VALVED OUTLET OF THE CONTAINER, A CONDUIT FOR ESTABLISHING FLUID FLOW COMMUNICATION BETWEEN SAID ELEMENT AND SAID RESERVOIR INLET AND A MEMBER FOR URGING THE OTHER END OF THE CONTAINER IN A DIRECTION TO CAUSE SAID ELEMENT TO EFFECT OPENING OF THE VALVED OUTLET OF THE CONTAINER, A PASSAGEWAY FOR CONDUCTING FLUID UNDER PRESSURE FROM SAID RESERVOIR TO A POINT OF USE, AND VALVE MEANS IN SAID PASSAGEWAY FOR CONTROLLING THE FLOW OF FLUID THERETHROUGH.