2010 Chaparral - Water Fill Station Valve

[Tallan1976]

I had a few of the valves corrode and break on my main 4-way water fill station assembly. I am having a hard time finding anyone local who knows what these parts are called. I took a picture of one that is intact and also of the main assembly where you can see the broken ones. Any advice on what these are called or where I can find some new ones would be great.

The main body of the assembly is in good shape, it's just these valves that screw in that are bad.

Thanks!