Bottle Coupler (Tornado Tube)
thingiverse
This bottle coupler meets the latest standard for carbonated beverages: PCO-1881, which can be accessed at https://www.bevtech.org/threadspecs-downloads.asp. Designed to fit two BS1806 #215 O-rings with these specifications: * CS: 3.53 mm * ID: 26.57 mm * OD: 33.63 mm I created this coupler to connect pairs of 2-liter carbonated drink bottles for my son's water rocket project. It proudly displays the phrase "Rocket Boy".
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