Where does the propane go?
Ol biscuit and I disagreed on whether or not is was possible for there to be air in a propane system basically with the tank valve shut and all the appliances turned off(valves shut). He said impossi...
Forum Discussion
BB_TX wrote:
But with your reasoning, if the line still contained propane (i.e. it was not somehow lost when the burner valve and tank valve were closed) then that propane in the line would have been repressurized and recondensed as soon as the propane tank valve was reopened, and the subsequent flow should have been immediate propane to the burner that would have ignited. But it does not. Not even a half hearted attempt. Not until a minute or so of flow for the line to refill with the new propane coming from the tank. And that initial flow is enough to blow the flame on a match, so it is not something that slowly builds.
I don't mean to be overly argumentative, just trying to understand the phenomena.
Until sufficient flow is established the air/fuel ratio is 'air rich'
Propane is there just not rich enough for amount of available air to make fire
Once demand is established with reg open enough to allow high enough flow and maintain line pressure then proper air/fuel ratio is met...FIRE
(go to higher elevations and you run into a fuel rich environment due to thinner air...no fire)
