One problem I've had when getting my tank filled is the amount or
lack of amount of gas that comes out from the overflow valve. I've
got the older style valve where it vents through a small tube that
attaches to the valve on the outside not the newer style where you
just turn a small screw on the side of the valve. Anyway everyone I
take it too says the over flow on the valve should be under more
pressure when it gets full but normally still fills it for me.  To
make sure I don't over fill I've been filling the tank to 80% of it's
max using there gauge while it fills. I was told that's the most you
should put in.

JFF

>Here's a Political Action Committee (PAC) site that explains some of the OPD
>history.  Thanks to Mark for pointing out that my "It seems" opinion was
>perhaps unjustified.
>
>http://www.npga.org/i4a/pages/index.cfm?pageid=531
>
>When reading the article, remember that these folks are the lobbying
>organization who represent the Propane Gas Industry.
>
>So if you DONT open the bleed valve on an "empty" tank, how much liquid
>propane will flow into the tank from the source and what determines this
>amount?  I personally watch the work done by the purveyor in filling the
>tanks to ensure that the filling vent is open and that he stops filling when
>liquid phase propane exits the vent.  I've caught a few who had a little
>difficulty in getting the autostop to accept a fill, opening the vent
>usually fixes this.  On occasion, the release "button" must be reset to get
>the tank filled.
>
>Pensioner