Subo Bottle - Valve
$5.95
Soft Silicon Valve. Fits into all coloured bases.
It is made from food grade silicon. The dome shape has a 12mm slit that allows air into the tube so that the platform can move up as the food is being consumed. The valve also stops air from escaping the tube to help keep the platform suspended.
It can be easily removed for cleaning and replacement purposes.
One size fits all.