I have used the pre-made hardware store metal flex lines in several
vans. No it is not strictly kosher. It is essential to clamp and/or tie
the lines every few inches to something that will keep them from moving
while the vehicle is being driven. They are meant for rare occasional
flexing, like in a stationary kitchen when servicing the stove or what
have you. The lines I have used have 3/8" flare ends and came coated
yellow at some stores and a metal finish at others. I think 48" is
right. I still have the first set I installed, some 20 years and 150,000
miles later.

Mark

Neil2 wrote:
> I just checked HD and a far superior HW store.  Seems the 'painted'
> (Yellow/Grn/Red(?)),
> flexible 'gas' tubing is predominate.  Plan to visit Ferrelgas.  It is
> essentially stainless steel and a little larger (3/8 OD?) than the soft
> copper but I figure the cost to fab (flare) a 3' piece at FG or other will
> be more $$ and not necessarily better than OEM.
>
> I pitched my Dometic and am about to install a Vitrifrigo so now is the time.
> When I R&R'd me 4 way with a 3 way (Propex on board) I ended uprerouting
> the stove line and despite trying couldn't get the bend just right.  In the
> process I ended up with less than strong confidence the wall wasn't
> weakened in that one place.  Since I have to R&R (?) the stove line to R&R
> the cabinet to R&R my cockpit carpet I am not comfortable with stressing
> that one bend again and afterward using it for years.  Hence the query.
> That same superior hardware store will supply my rubber to fab a new hull
> opening for the larger line/fitting. http://www.parkrosehardware.com
>
> Next ?: is a 3' run long enough. IOW, is the OEM soft copper 3' long or is
> it more or is it less?  My measurements indicate barely and ifnot it'll be
> cheaper to add a fitting or use a 4' piece.  I do NOT like extra fittings
> so 4' would require me to route the line in a circuitous manner to take up
> the extra or make a loop on the horizontal plane behind
> the stove.
>
> Now, while I appreciate y'all's help I chuckle every time I post a ?
> since y'all
> tend to make assumptions about queries.  Now you know . . . the REST OF THE
> STORY.   Mr. Paul Harvey
>
> On Sun, May 1, 2016 at 6:29 PM, Alistair Bel <albell@shaw.ca> wrote:
>
>> I think, but not 100% sure , that here in BC flexible lines inside RV is
>> not allowed. I think it has to be copper. But that aside, you might have a
>> problem making the curves in the flex line to match up with the fridge
>> inlet. And you might have issues feeding the two flex lines through the
>> floor and around to the T by the reg.
>>
>>