Carrying larger 10 and 20 lb propane tanks in Class C

An old secret for nicely supporting the common 20 lb. (5 gallon) propane tanks during transportaion is to put each one in one of these rugged baskets that last for years so that the tanks cannot tip over or scrape anything - a 5 gallon propane tank perfectly fits inside these: https://www.homedepot.com/p/GSC-Technologies-11-in-x-13-in-x-13-in-Black-Milk-Crate-MC131311-002/204793156

We store our extra 10 lb. and 20 lb. RV propane tanks in unvented exterior storage cabinets. Just in case the valve on these tanks should ever tend to leak a little with age, there are available brass sealing knobs that screw right onto where you normally attach tank hoses to the 10 lb. and 20 lb. tanks. These brass sealing knobs are a second line of defense against tank leakage during storage and transportaion.

IAMICHABOD wrote:

klutchdust wrote:
They need to be carried in an open environment. They have pressure relief valves that will go off should they become overheated .

I often wondered just how hot it has to be in that compartment for the pressure relief valve to go off,does anyone know?

I have no idea but when my brother's trailer caught on fire he had a couple of them vent. No explosions. The explosion in the video was actually the fridge popping. The fire started in the fridge area. It was one of the recalled Dometics but the recall had been done on it. Not really sure what happened.

https://youtu.be/5HohnRP0Vy0

So the answer to the question is they vent somewhere between ambient temp and when immersed in flames :)

klutchdust wrote:
They need to be carried in an open environment. They have pressure relief valves that will go off should they become overheated .

I often wondered just how hot it has to be in that compartment for the pressure relief valve to go off,does anyone know?

Around here it's a pain to find someone to fill my onboard tank so I have an extend-a-stay as well. I put a 20 lb. cylinder on a towel (so it doesn't scratch up the floor) in the shower and crack the roof vent open a bit. So far so good.

Carry upright in a compartment that is open to air either completely on one side or the bottom. (Compare to the inside construction of many travel trailers and fifth wheels that carry cylinders in on-board compartments.)

Lynn

They need to be carried in an open environment. They have pressure relief valves that will go off should they become overheated. I have seen some tied to ladders in the back or on a carrier that is mounted on the hitch. My toad has a hitch and that is where I would put mine should I need an extra tank. Never in an enclosed storage .

I store my 10lb tank upright next to the grill in the rear external storage compartment.