Propane is not considered to be a greenhouse gas, and may be dispersed in
the open air, if there are no places nearby for it to settle into, thus
creating a flammable pool.  Notice when you fill that propane vents to the
air.

Now, regulations vary from state to state, or province to province, so
check before releasing, I suppose.

On Tue, Sep 22, 2020 at 3:17 PM Alex MeVay <alex@mevay.org> wrote:

> I appreciate all the info here; some propane tank work has been on my list.
>
> What's the best procedure if the tank is full?  (Will a shop be able
> to recover or drain the propane?)  I had a recent fill, and mine runs
> only the stove, so it will be a few years before it's empty again of
> its own accord.
>
> Have any of you mounted the regulator to the van body, and used some
> sort of a high-pressure flex line from there to the shutoff valve?  I
> damaged my shutoff valve offroading, and I'm interested in replacing
> that and getting the regulator out of harm's way.
>
> Thanks,
>
> Alex
>