I ran 1/2 inch pex throughout the bus to service all of the fixtures. This part is the back side of the intake, which connects to the fresh tank below. The blue line in the background is the fresh lines that will run to all of the cold faucet valves at the sinks and showers.Water comes up through the floor, into the pump (lower), then to the accumulator tank, then to the fixtures. The first T after the accumulator tank is a bypass so that I can use pressurized city water without pulling from my fresh water tank. The second T heads down to the hot water tank. The red line is the hot water out, which runs parallel to the cold line to the other fixtures.The box with the “H” written on it is the back side of the exterior shower. That is where the hot water valve is located. The two pipes on the left head over to the interior shower on the other side of the bus, through some conduit and the ceiling.Everything hooked up and extra valves in place. I tried to use as few cuts and elbows as possible in the hopes of experiencing less leaks and better flow. Again, I am not a plumber.The thicker blue line in the front is the pressurized water fill. It has a T off of it that heads over to the T after the accumulator tank. When I am hooked up to city water, I can open that valve in front to fill my tanks. If I close it, but I am still attached to the city water, then the city pressure will fill my lines and I can use it like normal, without having to run my pump or use my water reserves. There is a check valve in the background, on this line, that prevents the pump from pumping water in reverse, back into the tank in an infinite loop. That would be bad.The inner-workings of the shower. The water lines snake through the ceiling to this wall, where the valve mixer lets the warm water up to the shower head. The lines that continue past the mixer and down, are the lines for the bathroom sink. The black pipe is the air vent for the grey water tank, and has a T off for the bathroom sink.On the other side of the wall is the bathroom. You can see the fresh lines coming through the wall on the left, for the sink. The black hole between them is the drain hole for the sink.
