System and method for filling containers with fluids

A method for simultaneously filling balloons with a fluid using an apparatus sufficiently compact to be operated while being held by hand, comprising:

• attaching the apparatus to a fluid supply, the apparatus comprising:
• at least three branch assemblies each comprising an automatically-sealing balloon with a neck disposed around and removably attached to a first end of a tube;
• and
• a fitting comprising an inlet configured to connect to the fluid source and a bulkhead joining the at least three branch assemblies at respective second ends of their respective tubes;
• simultaneously introducing the fluid into each balloon of the at least three branch assemblies;
• and
• simultaneously detaching from the apparatus at least two balloons of the at least three branch assemblies, each detached balloon automatically sealing responsive to detachment.

A method for simultaneously filling water balloons using an apparatus sufficiently compact to be operated while being held by hand, comprising:

• attaching the apparatus to a water supply, the apparatus comprising:
• at least three branch assemblies each comprising an automatically-sealing water balloon with a neck disposed around and removably attached to a first end of a tube;
• a fitting comprising an inlet configured to connect to a fluid source and a bulkhead joining the at least three branch assemblies at respective second ends of their respective tubes, the fitting and the at least three branch assemblies at least partially defining fluid paths extending from a common point within the fitting to the inside of each balloon container of the at least three branch assemblies;
• simultaneously introducing water into each balloon of the at least three branch assemblies;
• and
• detaching from the apparatus one or more of the balloons, each detached balloon automatically sealing responsive to detachment.