Apparatus for delivery and retraction of fluids

A system for controlling circulation of a fluid to and from an external device for heat transfer, comprising;

• an external fluid circuit coupled to said system and said external device;
• a supply inlet adapted to receive and transmit said fluid therethrough;
• a supply passageway coupled to said supply inlet and said external fluid circuit;
• a bypass passageway coupled to said supply inlet, said bypass passageway comprising a venturi valve region adapted to create a suction force when said fluid flows therethrough, said venturi valve region comprising an inlet region, an outlet region and a restricted region disposed between said inlet region and said outlet region,
• said venturi valve region further comprising a fluid jacket, said fluid jacket configured to at least partially surround at least a portion of said venturi valve region, said fluid jacket adapted to receive said fluid therein,
• said fluid jacket comprising a fluid jacket inlet and a fluid jacket vacuum orifice, said fluid jacket vacuum orifice coupled to said restricted region of said venturi valve region;
• a control valve coupled to said supply inlet, said supply passageway and said bypass passageway, said control valve adapted to divert said fluid from said supply inlet into and through said supply passageway and, thereby, into said external fluid circuit, and divert said fluid from said supply inlet into and through said bypass passageway and, thereby, into and through said venturi valve region, whereby said suction force is created by said venturi valve region;
• a return passageway coupled to said external fluid circuit for receiving said fluid from said external device, said return passageway comprising valve means for preventing a backflow of said fluid through said return passageway;
• and
• a suction passageway coupled to said supply passageway and said fluid jacket inlet.