Join Date: Sep 2003
Location: Auckland New Zealand
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The little cross-piece in the image on SD's post is the valve stem. If this is pushed in and then turned, it locks the valve open. This is so that the dingy will quickly deflate.
That's probably a reasonable definition of what's happening to yours?
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"Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying."
Arthur C. Clarke