[AlanJohnson]

I don’t have the results from the flour test yet, but when I was putting the flour around I noticed this valve was very loose. I have never turned it but it easily spun and felt like any packing could be bad.

I can rebuild a home faucet, but I don’t know if this requires special packing or washer (high temp or coolant proof)? So two questions…
1. Does somebody know what this valve controls?
2. Can the valve be rebuilt?

Thank you
Alan