Thanks to the Internet, we know a lot about ram pumps. The basis is the transfer of fixed energy. Confirm energy can be expressed in p.e = mgh. The potential energy of 1000kg of water at 1m height is the same as p.e of 10kg of water at 100m height. Therefore, if the efficiency is 1, it can deliver 1000kg of water from 1m height to 100m height without using external energy. Due to the other loose, the efficiency could not be 1 but only 0.8, so 8kg of water could be transported to that height.
The ram pump is said to be made up of six main components to transfer energy. inlet pipe, water chamber, waste valve, check valve, air chamber, and outlet pipe. A certain amount of water from a height enters the water chamber through an inlet pipe, and when pressure is reached, the normally opened waste valve is pushed off. The water pressure inside the water chamber rises and the check valve, which is normally closed, is pushed open to allow water from the water chamber to enter the air chamber.