Well, the Dometic refrigerator has the standard thermocouple driven valve that in theory, and in practice, shuts off the gas at the flame, like older water heater and furnace pilot lights in homes. That's why the refrigerator doesn't pump gas out if it fails to light. My concern has always been, however, that all things fail, and in a moving vehicle, failure is perhaps more likely than in a stationary appliance at home.  Gas shut off at the source provides less opportunity for failure.  Leaks may be more likely in the vehicular application than in the home?  At any rate, I have always followed the warning in the camper manual that says not to run the refrigerator on propane while driving, for safety reasons.  That's why the thing has the battery mode.

DMc

---- Roger Whittaker <rogerwhitt1@GMAIL.COM> wrote:
> dear fire in fridge
> i asked that question a long time ago and was told that the driving can blow
> out the flame and cause the gas to run on unabated ...
> when one wants to board the ferry here and there are several here ..to get
> to powell river bc...
> they make a big deal out of having propane shut off at source ...
> again in case pilot light is extinguished ...
> so i have never questioned this line of thinking cause i have never heard
> any other ...
> even though i have asked others ...no other ideas have been put forward
> yours
>
> On Thu, Nov 4, 2010 at 5:52 PM, Loren Busch <starwagen@gmail.com> wrote:
>
> >  RE: Burned out RV
> > Okay, but someone is going to have to explain to me how leaving the 'fridge
> > on propane while driving is going to cause a fire.
> >
>
>
>
> --
> roger w
>  From Proverbs:
> Under three things the earth trembles, under four it cannot bear up: a
> servant who becomes king ...
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--
David McNeely