ok to use "appliance connector" in trailers?

[johnv]

I understand that CSST gas pipe is not allowed in camper trailers, but what about flexible appliance connectors like those used for home cooktops etc.? We're replacing the original range with a drop-in cooktop, and we'll need to bring the gas line in thru the side. This will require the line to have a few bends which would be easily made by hand with the flexible connector, but will be challenging with 3/8 OD copper tubing. (I'm sure a pro could bend it up in no time, but not me.)

Has anybody used these?

Here's an example of the connector I'm talking about. www.amazon.com/s/field-keywords=B000AM8T38

[offspringin]

I think the issue with these are that if they rub on anything (say while towing the trailer) that they can develop pin holes or holes in general in the side of the flexible pipe leaking gas into the trailer. Since there is no code for TT you would probably be alright as long as anywhere it would rub on anything its protected by a rubber grommet etc etc. I know one of these is on our range and i suspect if our dryer was gas it would use one as well. I believe they are no longer allowed to be used on gas furnaces because of the rubbing issue.

[dawgpound]

Propane is very unforgiving. If in doubt, hire a licensed professional and this goes for electrical work, as well!!

ALL propane lines run in campers and trailer needs to be stable and pressure tested to be at a stable 11"wc and if you don't know anything about this or how do do it safely, hire a professional!

I plan on hiring a licensed HVAC person or plumber to run all of my propane lines and make all of the finial connections.

I have seen a few campers destroyed by a leaking gas line and the sight ain't pretty..............The last one was at Myrtle Beach State Park in SC about 3 years ago.

[vikx]

The flexible lines are not legal in RVs as far as I know, nor are rubber propane hoses. This may vary from state to state.

Modern RVs use black iron under the trailer and tee off into the trailer with copper. Fittings are 3/8 flare.

I use copper to plumb my lines and have not had a problem; always tested!

[dawgpound]

Vikx,

Have you ever replace the old original black iron propane pipes? I am concerned about the rust that might be inside the pipes on our Starflyte.

[vikx]

My vintage trailers have had only copper gas lines. I will say the old copper is a lot thicker than what is used today. I always cover my new copper with split loom to prevent road damage...

That being said, I would probably suspect the black iron if it was very rusty on the outside. (more than surface rust) Also, blowing the pipes should tell you if replacement might be a wise idea. Older propane lines can be contaminated with *oil* from the added stink, ethyl mercaptan. The oil can fill the regulator and ruin appliance valves. If a smelly black oil drips out of the black pipe, check each line going to the appliances. In most cases, the oil doesn't reach the stove or heater because they are "uphill". I've seen oil contamination in newer rigs that have been lived in.

I used a 3 foot section of black iron on my 53 Hanson. It is a sturdy and safe way to begin the gas system.

Note: Some RV companies are using flexible "vinyl" type hoses rather than black iron or copper. I believe copper still runs into the coach, but underneath are the newer flex hoses. Have not personally seen them, but am guessing they are similar to the yellow lines now being used in some houses.

[dawgpound]

Thanks Vikx. You are a wealth of info!

Happy Holidays!