This is a very useful, yet simple appliance that allows a busy barista to keep their frothing pitchers clean. And not only does it clean out frothing pitchers, but it cools them off in a hurry - the way you want them for optimal frothing.
This rinser will clean any glass, pitcher, cup, shot glass, or coctail shaker by simply pushing it down on the center of the nozzle in its sink. If you look at the closeup photos, you'll see that the nozzle in the center of the appliance has little jets on top of it. When you push your pitcher face down on the hexagonal rods, the jets in the center of the star will blast the inside of your pitcher clean.
This countertop rinser stands on the counter, and connects to your COLD water, and to your drain with external hoses. The press fittings in the water input valve are not meant to handle hot water. The good news here is that as it cleans your pitcher out, it also cools it down. To make high quality froth, it’s best to start with COLD milk in a COLD pitcher.
Note that because this uses cold water, and it doesn't use soap, this doesn't provide sterile cleaning - it is NOT meant as a cleaning appliance for glasses and cups that people drink out of. But it does provide a serious blast of water to rinse out things as you use them. Without this, you would likely not clean things like frothing pitchers between drinks anyway. This sink allows you to improve on that - and to improve on your froth, since it makes the pitcher cold.
This countertop washer stands a mere 5" tall, and is 6" by 6" square. Any vessel up to 4.5" in diameter can be pushed down into this appliance, and rinsed out, but this is meant primarily for frothing pitchers. Again, when you look at the pictures, you'll see that the water input and drain lines connect directly to this little sink. This makes it a portable countertop appliance.
The hexagonal-star frame (onto which you push your face-down pitchers) operates the ON valve for the water spray. All you need to do is to push the frothing pitcher down onto the frame. This turns the water on. Remove it, and the water shuts off. This is a very handy and simple rinser. It's even good to use on clean pitchers, because it makes them cold - which is what you want for a high-quality froth.
The cold water input valve is a 3/8" Press Fitting connection. It will give you a water-tight seal just by clicking it into place. This does not require tools - you can do it by hand. The drain line is a standard 1/2" barb fitting - you'll simply push a rubber hose onto the nozzle, and run the hose into your sink.