Read Caution Below!

I needed a way to drain water out of my tractors tire. Manually holding in the valve stem while it slowly drained was a pain. Decided to remix the original valve stem cap file to include a part to depress the valve stem and holes to allow the water and air out. Simply thread on and let the draining commence. Less than 1 gram of filament to print. I used PETg, but I would imagine anything other than TPU would work fine.

Note: I do not endorse this to be used to deflate tires that aren't yours, such as your ex-whatever, or childhood bully.

Here is the caution! COMPRESSED AIR IS POWERFUL! Thread the cap onto the valve stem slowly until it just starts to release air. Going too far might not allow the air to escape fast enough and possibly turn the cap into a projectile. Also, do not stand in front of the cap while threading it on and maybe consider wearing safety gear. I had no issues in my testing, but use this tool at your own risk!