Can you use an old non-lead-free valve for drinking water?

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   Using the valve anyway since risks are deemed low
2. 2
   Buying a brand new valve since they are cheap
3. 3
   Using it only on non-potable systems like a water heater loop or irrigation

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.