Which of the four holes that appear in the photograph are you talking about?  Three appear to be machine made and I would guess that they belong there.  The fourth, in the upper right corner of the regulator as one looks at it, appears to be a crack and I  would think it was damage, perhaps from something striking the regulator.  mcneely

---- Steve Williams <sbw@SBW.ORG> wrote:
> What is this small hole in the face of my propane regulator?
>
> I've stopped using the propane system until I can understand why
> there's propane leaking out of that hole!
>
> http://mira.sbw.org/photos/20120528/P1000510/
>
> More photos:
>
> http://mira.sbw.org/photos/20120528/
>
> Van Cafe in Santa Cruz installed this new propane tank, valve, and
> regulator in January, 2011.  I've used it only a few times since.
>
> Last time I used it, when I opened the valve, I noticed a hiss.  I
> located the leak with my thumb.  My nose and my electronic propane
> sniffer confirmed it was propane, so I shut the valve and decided to
> wait until I can find out what the deal is!
>
> Is this an overflow vent of some kind?  If so, is there a better way
> to vent the tank/pressure down to the correct level?  Sounds kinda dangerous.

--
David McNeely