[Rsmarlow82]

I use metal quick connect for city water connections. I bought at Walmart, but other places carry like Rural King, and similar farm supply stores.

At the end of my supply hose, just prior to my water filter ( I use the replaceable home type unit) I installed a "Y" with shutoffs... . (1) outlet goes to a shutoff valve in front of the filter unit.. These connections are all with metal quick connect
The other outlet of the "Y" I installed plastic quickcouplers, a short hose, another quickcoupler, a (1) way "plastic" check valve, and then a connection to the "black tank cleaner" connection..



By using plastic on all connections and hoses for the "black water side" , and metal for the "city water side" , I can keep them sanitary and separated..


Woks for me.