Ram Water Pump

This is a Ram Pump, which uses the pressure of liquid behind it in order to push water uphill or to a higher location without the use of electricity or other mechanical aids.

a more detailed description of how the pump works can be found here:
https://www.youtube.com/watch?v=aUTjVovpKvA&t=9s

a similarly sized ram pump build&test using shop bought parts can be found here:
https://www.youtube.com/watch?v=uMMQx5Nfi_U

notes:
- a toothpick (or similar small thin stick) is needed to fix the hinge inside the valvw
- i have not tried to actually pump water with the design; though it is useful to learn about how the mechanism works.