Items needed :
1. 3/4" PVC coupler
2. 3/4" to 1/2" PVC reducer
3. Approx. 1" long pin (see diagram)
4. Few glass marbles
5. PVC pipe glue
Follow the steps or please download the original image for bigger viewing and reading.
The commercially brass type check valves are better for prolong usage. This DIY cheap check valve is only for my testing purposes. Any DAMAGES/INJURIES/DEATH due to this design, I'm not responsible.
Thank you for viewing.