April 3, 2025
Description
In case you've lost a cap, print a new one. The bag valve commonly has a pink rubber insert that acts as a one-way valve, and the cap is used to keep the valve closed. This thread is a 2-start 1.4mm pitch with about 24mm diameter. This valve setup is used on Amazon Basic vacuum bags (https://www.amazon.com/AmazonBasics-Vacuum-Compression-Storage-Bags/dp/B07RSCPH4N/) and several other brands. Also used on some filament storage bags.
The adapter converts from the common stand-up paddleboard pump 1/4 turn bayonet hose connection (see Hulkey-Roberts 690NSBVG fill and deflate boat valve, https://www.halkeyroberts.com/Products/fill-and-deflate-boat-valve). It is a great solution if you're going on a paddle board trip and taking your SUP manual pump. With this adapter and bags you can reduce the size of your pack and keep your stuff dry. Tie a cord through the hole in the side so that you can hook it with a carabiner.
Print the adapter with the threaded end up, with at least 4 wall loops, support under the inside pin, and maybe fuzzy skin for extra grippiness. I printed in PETG. Print some for your friends, and take a spare.
Fusion 360 parameterized models for the thread, adapter and cap are included.
Also see these other SUP pump adapters: https://www.printables.com/model/1252768-sup-pump-adapters
Did you build it? Please leave a comment and rating.
License:
Creative Commons — Attribution