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:Old-Biscuit wrote:
After a period of non use one does not purge air from propane system.......one establishes flow on a static system and places a demand on LP Regulator.
It's as simple as that.
......
Not that simple. On mine there IS a flow when the burner valve is first opened (as indicated by the match flame being blown about) but ignition does not occur for a minute or more after that flow starts.
That is because LP regulator has opened to provide 0.4 psi in downstream system......but then closes back down until demand is required.
Upon demand the little bit of propane in system is not sufficient for ignition (or maintaining ignition ) until higher flow is established, which happens when reg senses demand and drop in line pressure.
Lighting off stove top burners helps establish flow and demand which places regulator fully in service vs static state when not being used.
