> wrote in message
> first day using the grill, right after hooking up the propane and
> firing up the grill, there was a humming noise at the tank, kinda like
> something is blocking the flow. But it went away and I assumed all was
> well. Well, it came back today. I don't think it's anything to be
> concerned about, but I want to make sure. Any ideas.
>
> Thanks in advance for your comments.
> Anthony
>

Probably the gas passing through the OPD vale inside the tank. This is
floating near the top at the outlet. Sometimes they do block the flow and
you have to shut it off, wait 15 seconds, then slowly turn it back on. This
only happens when the tank is near full.