Metal
Yes the dish is metal and the water fitting is brass instead of the cheap plastic. So much better and should last a long time. And yes the hose wheel is an added benefit. It is much easier to attach the hose.
What I do is attach a 90degree y-pipe fitting that has separate shut off valves. One valve does the water filter and the other is for another shrinking garden hose. I use the hose to wash off stuff. Nice added feature. And it helps with taking the unit down. I use the garden hose to relief the water pressure before removing the water filter side. And to rinse off the waste valves and hoses.
Yes @Bill. Should something go wrong and forget about removing the hose before closing the camper would be a big deal. But you would really have to put some force to it to crush that metal dish. It's solid unit. Should it freeze up in the winter camping. Don't have to worry about the plastic breaking.
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