Bottle Cap Hose Barb 3.0
thingiverse
Fixed barbs failing to seal under pressure with tubing. Tested without leaks, no breakoffs, everything working perfectly. I use a few of these to ensure bottle-to-cap connections don't leak under pressure http://www.aliexpress.com/item/1000-Pcs-Mechanical-Black-NBR-O-Rings-Oil-Seal-Washers-24mm-x-22mm-x-1mm/32334703163.html?spm=2114.13010608.0.89.MlpBNa they are 24 x 22 x 1 mm o rings. Changed outer tubing to 1/2OD 3/8ID Tubing. Reinforced barbs to prevent breakoffs, reducing flow rates but increasing reliability. This solves the issue of screw-style hose clamps causing barb breakoffs. It allows soda bottles to be used as reservoirs for various small pump systems. Bottle Cap Hose Barb 2.0 Description - Soda bottle with improved hose barb design. The old version leaked between plastic layers due to thin material, even after vapor polishing. This new one is thicker and doesn't leak.
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