Vortex Valve Assorted
$2.90
With your Vortex Valve and a flick of the wrist a tornado in a bottle is created. Scientific fun. Now supplied with two ‘0-ring’ seals to protect against leakage.
Use 2 plastic drink bottles with water and place the Vortex Valve between them. Watch the vortex form when water flows from one bottle to the other
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