I believe this is the vent to my plumbing but I’ve never seen a cap like this. Any ideas?
Use a flat piece of metal or wood and lay it across the cap, then turn. It will apply pressure to two of the nubs instead of one, preventing damage.
This worked like a charm thanks. Surprised how easy it ended up being. When I tried a different method it felt like it was glued shut.
I assume if it is a solid material, then the standing nubs are for using a spanner bar across them and turning. I haven’t seen this specific one before. Sometimes they are depressions and you have a pin spanner wrench.
It’s solid but not very strong. I tried to use a small wrench and it was breaking the nubs. The thing is incredibly tight
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