Finally got sick filling up the water tank and decided to make the connection. I ended up drilling through the side of my water tank and the metal housing that the water tank sits in. While I had the machine apart, I replaced the relay which was showing signs of failure; you can see the old relay in the lay photo. Finally, I built a little "roof" above the power relay in case the elbow fitting leaks in the future. The entire system is connected to my six stage RO system. The parts I used to make the connection were:

-Kerick float valve
-John Guest 90 degree elbow
-John Guest shut off
-John Guest "Y"
-pressure regulator (which I don't actually need)

Your writeup is similar to Dave's from way back when: Quit Filling That Water Tank!

ng wrote:-pressure regulator (which I don't actually need)

To reduce the risk of the valve failing to close, I would install the pressure regulator and set it to 20 PSI. Unlike a toilet tank, there's no failsafe drain mechanism if you walk away while it's refilling and the valve sticks open. Flood Mitigation for Plumbed Espresso Machines offers a smart solution that cuts off the water supply if the unexpected happens.

With the splits and the length of tubing I've run the float valve is hardly seeing 15PSI but, good advice

The Anita I bought was converted to plumb-in, and had a shutoff solenoid at the water inlet fitting to the machine. When the machine if off, it cuts off the inlet. The braided line also had a regulator on it which is adjusted to 6 bar. This seems to be on the high end of what is recommended. I think whoever did the mod used a kit that Quickmill offered for one of their other machines.

Has worked well so far.