Thanks, Ken. My valve was set for 175. The gauge was reading 150 for a long time and just jumped to 175 the other day. No explanation that I can think of.
Again, opening the valve and draining water should reduce the pressure, right? Except the gauge stays at 175 so I believe it is defective. As far as a gauge being standard, I can only say that whenever I’m in someone else’s house and I have the chance, I check their valve box. And so far, I am the only one I have seen with a gauge. But if at some point I replace the gauge, I will get a glycerin filled one as suggested.
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