Dual duct flexible coupling apparatus and methods of use

A method of using a flexible dual duct coupling, comprising:

• placing a first nut assembly over a first ferrule of a first dual duct assembly and a second nut assembly over a second ferrule of a second dual duct assembly;
• sliding a coupling body over the first ferrule;
• mating the first nut assembly to the coupling body;
• attaching the first nut assembly to the coupling body, thereby flexibly and reversibly affixing the first ferrule within the coupling body;
• and,
• repeating the sliding, mating and attaching steps of the first dual duct assembly for the second dual duct assembly, to flexibly and reversibly attach the second dual duct assembly to the coupling body.

A fluid transfer system, comprising:

• a first fluid reservoir;
• a second fluid reservoir;
• at least one flexible dual duct coupling, comprising,
• a coupling body having with an inner flow passage and an outer flow passage therethrough;
• a first nut assembly configured for reversible attachment to the coupling body;
• and,
• a second nut assembly configured for reversible attachment to the coupling body, wherein the second nut assembly is opposite the first nut assembly;
• and,
• dual duct assemblies operatively connecting the first and second fluid reservoirs through the at least one flexible dual duct coupling.

A clamshell dual duct coupling, comprising:

• a body ferrule, configured as a cap of a first dual duct assembly;
• a second ferrule, configured as a cap of a second dual duct assembly and for insertion into the body ferrule;
• and,
• a clamshell assembly, configured for placement around the body ferrule and the second ferrule to reversibly attach the body ferrule and the second ferrule together,
• wherein when the body ferrule and the second ferrule are reversibly attached by the clamshell assembly, the first dual duct assembly is in fluid communication with the second dual duct assembly.