18” round foil balloons are brilliant for inflating with helium as they’ll stay inflated and looking sharp for days, here’s how to inflate one…
1. Take the neck of the foil balloon and find the small hole at the top of the neck. This is where the inflator nozzle of the helium cylinder slides in. Be careful to keep it on top of the white part of the circle so that it doesn’t tear the balloon.
2. Ensure the cylinder is in the ‘off’ position then take your foil inflator and push it onto the front tap of the cylinder until you hear it click.
3. Turn your helium cylinder on. This is done by turning the tap on the back of the cylinder anti- clock wise – you will hear a small ‘pop’. You can then flex the valve on the front to test if the helium is on (you should hear a hissing as the helium comes out.)
4. Next you need to put the inflator valve into the neck of the balloon as described in step one.
5. Once that is in you can start to inflate the balloon by either tilting the valve or pulling back on the valve depending on what type of inflator you have. Special foil inflators like the one in the picture work on back-pressure so automatically stops when the balloon is full. Keep the balloon upright to allow the helium to flow easily. We’d recommend starting off inflating the foil balloons slowly until you get a feel for it and then start to get quicker the more confident you become. 18″ round foil balloons have self sealing valves so once you have fully inflated the balloon you can take it off the inflator and it will be sealed.
6. Once the foil balloons are inflated, make sure they are either weighted or have pre-attached curling ribbon and allowed to float up to the ceiling so they can be retrieved easily!
7. When you have inflated all of your balloons, ensure the helium cylinder is turned off and you have vented all the remaining gas in the nozzle. To do this, turn the dial on the back clockwise to the ‘off’ position and then flex the valve to release any remaining helium. The nozzle can then be removed completely, ready to transport the cylinder, by pulling back on the brass collar to release it.
These steps can also be followed for all other foil balloons! – Mark, Balloonologist.