Components in your LP TANK
Far left....level gauge float
Large pipe....Relief Valve
Middle....the Overfill Protection Device - liquid level float that shuts off filling at 80%
Small pipe....Bleeder Valve - fixed at 80% liquid level
Far right.....vapor pipe - service valve
When filling your tank the 'service vapor' valve should be closed
The 'bleeder valve' should be cracked open (vapor will come out)
Propane is pumped thru 'fill valve' until the shutoff float stops flow and liquid propane SPEWS out bleeder valve.
Filling is secured and bleeder valve closed
Attendant then May or maybe not OPEN service vapor valve
If opened too quickly an excess flow device in lp line can be tripped
STOP opening the bleeder valve. Not necessary
Close service valve and then after couple minutes SLOWLY open it fully
Turn on stove top burners on HIGH to 'Establish propane flow and place a DEMAND on regulator' (there is no AIR in system just no flow or demand)
Remember system pressure is on 0.4 psi and regulator has to have a demand before flow can occur. (Stove top burners on high is quickest way establish that demand)