At 10:38 PM 3/31/2015, Ryan Perry wrote:

>So was just trying to research this different valves and ran across this
>
>http://home.earthlink.net/~derekgore/rvroadiervfulltimingwhatisitreallylike/id44.html
>
>I only understand half but seems some interesting explanation on how it
>works.

Wow, excellent article.  I think you would be well advised to ask
questions until you understand all of it before proceeding.

For a start, when it speaks of an "excess flow" device it's talking
about the POL spud that screws into the female pipe thread on your
outlet valve.  POL is the old type  BBQ tank connector, left hand
threaded.  The spud, because it's a vehicle, must be of the type
called "excess flow" that costs more than the plain ones.  If your
downstream piping is ruptured in a crash, the rapid exit of gas will
trip a mechanism in the spud that slows it way down, helping avoid
the problems that can cause.  It's a big deal, but they're not very
expensive.  Maybe $5 instead of $2 or some such.

Yours,
David