Apparatus for supplying and continuously circulating fluid

An apparatus for supplying and continuously circulating fluid comprising:

• a) a fluid source;
• b) a plurality of valves;
• c) an outer main tube having a return end and an inside surface, the return end in open communication with the fluid source;
• d) an inner main tube having an outer surface located within the outer main tube defining a major fluid return path between the inside surface of the outer main tube and the outer surface of the inner main tube, the inner main tube having a source end in open communication with the fluid source;
• e) a plurality of outside branch tubes each having a first end in open communication with a valve, and each having a second end in open communication with the outer main tube, each outside branch tube having an inside surface;
• f) a plurality of inside branch tubes, at least one inside branch tube located within an outside branch tube, each inside branch tube having a first end, a second end and an outer surface, each first end in open communication with the inner main tube and each second end spaced apart from a valve in order to define a minor fluid return path located between the inside surface of each outside branch tube and the outer surface of each inside branch tube;
• g) a heater in thermal communication with the fluid source for heating fluid in the fluid source;
• h) whereby heated fluid travels from the fluid source through the source end of the inner main tube to the second ends of the plurality of inside branch tubes displacing unheated fluid near each valve so that when a valve is opened heated fluid flows immediately through the valve and when every valve is closed the displaced unheated fluid flows from the area near each valve through the minor fluid return paths to the major fluid return path to return to the fluid source.