On Fri, 06 Apr 2007 17:28:02 -0400, Jeff Wisnia
wrote:

wrote:

I have a 500 gal. propane tank in my yard for heating. I am changing
suppliers so the old company is going to come and get their rental
tank. The company I have been doing business with are real a$$holes,
so I want to make sure there is no gas left in the tank. The tank
contains about 5% and the heating season is almost ended. If there is
any gas left, I'd like to fill all of my 20lb cylinders and if needed,
I can borrow several 100lb ones from a neighbor. I can always use
these, and I want to make sure the bulk tank is empty, but dont want
to just waste it. I have the pipe adaptors for both tanks and a
certified for propane hose. Do I just connect from tank to tank, or
should I do it after the bulk tank regulator?

Yes, I know that the 20 Lb cylinders should not weight more than 20
lbs more than the empty tank, and I have something to get a rough
weight measurement on them. I'll underfill them just to be safe, and
they will remain outdoors after I do it. Of course all this will be
done outdoors too.

Has anyone ever done this? I've filled the refillable torch bottles
from 20lb cylinders in the past, so I dont see this all that much
different other than the amounts.

As long as we're into this, can someone comment on whether OPD valves
are foolproof?

It looks to me like they could be "fooled" into not doing their job if
the tank being filled were turned upside down or lying on its side with
the float arm pointing the "wrong way".

Float arm? Is there a float arm?

Or are we talking about a toilet?

Jeff