Making a Vacuum Pump! Amazing Homemade project! Awesome Experiments in a Vacuum Chamber! Wow!

Hi guys! Today I will show you how to make a real multipurpose double-acting vacuum pump at home!

We need:
medical syringe 50 ml,
air check valve (2 pcs.),
a tube from a dropper,
glass jar with a lid,
epoxy adhesive,
glue,
etc.