l Buying 3ft Large Latex Balloons
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Buying 3ft Large Latex Balloons

When considering these large latex balloons, most people require some help in calculating how much helium gas they will need to inflate 3ft balloons to make them float for maximum effect.

First, choose an inflation diamater - it makes a considerable difference to the helium gas required - we therefore recommend filling to 30" to save considerable amounts of helium and budget.

Save on helium - you can always airfill each balloon to start - aim at a beach ball size with air, then fill the remainder with helium.

Inflated to 30" diamater exactly, each balloon requires 8 cubic feet of helium to inflate giving a float-time of 3-4 days and a lift ability of 185g. To get the best seal, tie a knot in the neck of the balloon using the neck itself. There is no specific equipment or valves available to do this. To weight a single balloon you will need to create a weight ideally 50% heavier than the lift of the balloon when inflated with helium (185g + 50% = approx. 280g). To weight a bunch, you need 50% more than the combined lift of the bunch. To tether the balloon we recommend using our Nylon Line

Therefore, as an example to inflate 10 you would need 80 cubic feet of helium. Cylinder Guide below.

Inflated to 34" diamater exactly, each balloon requires 15 cubic feet of helium to inflate giving a float-time of 3-5 days and a lift ability of 340g. To get the best seal, tie a knot in the neck of the balloon using the neck itself. There is no specific equipment or valves available to do this. To weight a single balloon you will need to create a weight ideally 50% heavier than the lift of the balloon when inflated with helium (340g + 50% = approx. 500g). To weight a bunch, you need 50% more than the combined lift of the bunch. To tether the balloon we recommend using our Nylon Line


Therefore, as an example to inflate 10 you would need 150 cubic feet of helium. Cylinder Guide below.

​Disposable Cylinder Guide (To fill 1-5 balloons at 30" diamater)

F50 Disposable Cylinder 15 cubic feet capacity - Fills 2 - View F50 Helium Cylinder

F100 Disposable Cylinder 30 cubic feet capacity - Fills 3.75 - View F100 Helium Cylinder

F150 Disposable Cylinder 45 cubic feet capacity - Fills 5.6 - View F150 Helium Cylinder

Rental Cylinder Guide (To fill 6 or more balloons)

PT10 Rental Cylinder 64 cubic feet capacity - View PT10 Helium Cylinder

N10 Rental Cylinder 92 cubic feet capacity​ - View N10 Helium Cylinder

N20 Rental Cylinder 184 cubic feet capacity - View N20 Helium Cylinder

N30 Rental Cylinder 276 cubic feet capacity - View N30 Helium Cylinder
 

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