With the tanks in, and the drains mostly connected, it was time to install the fresh water supply. I used PEX because I’m not a plumber, and everybody says it would be easy. So far in my experience, it has been very easy. But, as of the time I’m writing this post, I have not yet turned the water on, so we’ll see about leaks when we get to that point.

Plumbing took some research, but it wasn’t too bad compared to electricity and the external components. I did have to be careful about where to put in check valves, which are valves that allow water to flow in only one direction through a pipe. I almost made a mistake that would have caused a feedback loop of water pulling from the tank, through the pump, and back into the tank. That would have been fun.

Here is a picture of my plumbing schematic.

This is extremely close to what I actually did. I think I added one valve that I later figured out was not necessary. The check valve that I installed to prevent the feedback loop went in between the city water fill and the “T” connection that branches the city water into the main water line, after the pump and accumulator tank. It is not shown on this schematic, so be sure you don’t have an open line from your pump, into your fill line, without putting some kind of manual valve or check valve in the way. You don’t want to drain your battery by exercising your pump for no reason.

Here is a video about how I progressed through the initial stages of the plumbing:

Here is how the plumbing went under the sink:

There will be more plumbing videos in the future.