/diy/ - Do It Yourself

>>2704478
>from an airtight reservoir
The reservoir cannot be airtight, at least not all the time, since for water to come out air must enter the reservoir to replace it. What you really need is a way to switch the reservoir between being airtight and not being airtight, to control the flow of the water. The simplest solution to accomplish this without using any kind of valves or controls is to use 2 tubes. One tube to let water out of the reservoir, and one tube to let air into the reservoir. Have the end of the air inlet tube located at the maximum desired height of the water in the jar so that the water stops flowing when the jar is full.