Check Valve for Gravity Pump

thingiverse

This is a check valve designed to utilize a spring in conjunction with a gravity pump, as demonstrated effectively in this video: https://www.youtube.com/watch?v=_II8img-Nas. To assemble the valve, you will need an M3 screw that is sufficient in size for your chosen spring, along with one large washer to apply tension to the spring and secure it in place. Additionally, three M3 nuts are required, as depicted in the first cross-sectional image.