Originally Posted by
Peek the Geek
Okay, I have come to accept the fact that the "lost" air is coming from the pump itself. And I'm aware of how the valve works. So.... Can somebody explain to me the purpose of the "Air Release Button" on my Topeak floor pump. It's claimed use is to allow the user to bleed small amounts of air from the tire to fine-tune the pressure.
But isn't the air being released simply coming from the pump itself and not the tire? Is the "Air Release Button" one of the more blatant bits of marketing BS out there?
I have a pump that used to work and had one of those. You could deflate a tire completely using that thing. I theorize that the pump head physically depresses the valve.
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Bring the pain.