http://www.npga.org/i4a/pages/index.cfm?pageid=530
Perhaps the early ones cut off the gas but now the new ones don't ? Hum... :
Q: Roofers and other commercial customers are trying to use OPD equipped tanks on torch applications and they are not getting an
adequate flow through the valve. What can we do about this?
A: Some of the early OPD valves had an insufficient flow capacity for certain types of service such as high-pressure torch
applications. Market competition has resulted in OPD's becoming available that have significantly greater rates of flow.
ŠNPGA 2002
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH & Endowment Member
NRA Second Amendment Task Force Charter Founder
Leon Fisk wrote:
On Tue, 10 Jan 2006 07:54:53 -0800, Eric R Snow
wrote:
On Mon, 09 Jan 2006 22:45:18 -0600, "Martin H. Eastburn"
wrote:
The valve by design is supposed to turn off due to the internal float.
It is designed to save our little skins from the bad propane bottles... :-)
Maybe you have one that is not functional.
Martin
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH & Endowment Member
NRA Second Amendment Task Force Charter Founder
Greetings Martin,
After thinking about this a little it seems to me that liquid would
come out just fine. When the tank is upright the float rises with the
liquid until the valve is shut off. When the tank is inverted wouldn't
the float now rise again? Except this time when it rises it is toward
the bottom of the tank because the bottom is now at the top. This
should open the valve. I guess the only way to test this is to invert
my OPD tank with a torch screwed into it.
ERS
I found this cut away image (along with a few others) of an
OPD device:
http://www.grandhall.com/overfill.htm
I don't know if they all look the same or not, but the ones
I checked did.
It looks like liquid would come out okay if the tank wasn't
almost empty. Hard to say how the float might act at that
point...
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