====== Fill Tube ======

This is a minimal filler tube - its made from 40mm PVC waste water tubing about 75mm long.  A shallow grove is cut all the way round. The loop of nylon cord allows weights to be tied on.

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Shot showing internal spacer - about 15mm thick super-glued to both the outer (PVC Waste) and inner (clear braided flexible fill) tubes.

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Balloon Neck pushed over the filler tube - Totex balloons are a tight fit.

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And secured with a cable tie that sits over the grove.

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For Hwoyee balloons fold the neck over and tie.

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The grove and the cable tie ensure the neck is well secured.

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Depending on the diameter of hose used you should be able to attach it to the "Balloon inflation valve" BOC/airproducts provide by heating the pipe by a hairdyer and pushing it as far as it will go over the valve. Wrap with a little insulating tape after for a better seal.

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