Another part of this project was to replace the galley sink faucet. I really like the thermostatic mixing valve style faucets, and had ordered one on Amazon a few months ago. They’re great water-savers since you don’t have to fiddle with finding the right temperature. The faucet does all of that auto-magically, you just set the flow rate you want.

Because the original faucet was a “3-hole” style, I knew I was going to need to come up with a cover plate in order to install the new “single-hole” style faucet. Kitchen faucets that I’ve installed in the house always seem to come with these cover plates, but I rarely need them so I had a couple of them stashed away. I did have to do some modification of the center hole size so the new faucet could go through it and sit on the countertop. The cover is just there to block the extra holes.
Once I got the new faucet, I realized I was going to need a couple of 1/2” male/male couplings to install it. Those turned out to be difficult to first find, then to buy. I had one left over from something, but what do you call it?

I eventually found that’s it’s a “Zurn Pex QC33T” coupling. I ordered two on Amazon, and got two of these.

I didn’t pay much attention to what they were until I started installing the faucet. Those are actually Q2500 check valves. I looked at the packaging they came in, and they have both the QC33T and the Q2500 labels on each plastic bag.
I went ahead and installed the faucet, and it works ok. But, it occurred to me (again, while I was going to sleep) that if I left those like that, I wouldn’t be able to drain the water out of the lines as easily using the low-point drains. So, I’m in the process of trying to get the correct couplings. I’m betting Amazon sends me two more check valves though, since both the labels on the bags looked like manufacturer labels.
This is how it looks installed. It’s secure and stable on the countertop, the flow of water is good, and it’s holding pressure without leaks anywhere. The platform hanging above it is a cat window seat. That was one of the criteria for the new faucet. I wanted a high-rise spout, but not too high. The cats need their window seats!

The cover plate turned out pretty good.

One of the connections under the countertop. My only question now is: “did I hook up the hot and cold lines correctly?” No marking at all on the faucet, and no instructions. I’ll find out once I get the LP compartment put back together.

:):)