Good Sam Club Open Roads Forum: mounting a propane tank to bumper
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 > mounting a propane tank to bumper

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Grit dog

Black Diamond, WA

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Posted: 01/05/20 10:50am Link  |  Print  |  Notify Moderator

Kayteg1 wrote:

devildog1971 wrote:

I had a class B that caught on fire, it had a 20 gallon propane tank and full of gas the gas tank and propane tank vented off lost the r v but no explosion

Bare in mind, even the title of this topic is misleading, we are talking about propane CYLINDERS here, as only those can be used with TC.
Lot of members can't catch the difference, but propane tanks do have safety valve.
Propane cylinders do not.


Yes they do have pressure relief valves, all of them. The little "valve" on the tank part of 1 lb bottles is the relief and the valve assembly on BBQ type bottles also has one.
What makes you think they don't, aside from being the eternal antagonist?

We're talking 2 differnet things here. The "safety valve" as you refer to it, relieves pressure when the internal pressure gets too high, which can pretty much only happen if the bottle is heated in a raging fire to the point it's boiling propane in the bottle.
This will make a huge fire, and it's not limited to BBQ bottles.
The other failure is a sudden puncture to the tank, from a bullet or maybe a car accident like the current discussion. This is no different than a built in propane tank.

Of course it's more exposed on the back of a vehicle. That is what is in question here. But, like the pics of the smashed trailer, anything can happen. The question is, what is the likelihood?
Is it safer to have the bottles contained in a plastic compartment with some little metal straps in the back corner of the camper (like ours, idk where other campers store them and don't care). If we got rear ended by a Mack truck while sitting still, the risk would be virtually the same as if it was mounted on the back of the camper, as it's not like a protective skeleton is built around the propane compartment.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

Grit dog

Black Diamond, WA

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Posted: 01/05/20 10:53am Link  |  Print  |  Notify Moderator

Actually the height at which its mounted probably determines the likelihood of rupture from a rear ended collision the most.
3' or less off the ground and it is more subject to direct impact by passenger cars and pickups. Higher up and the vehicle hitting the camper will basically go "under" the bottle.
Bottom line is, this is a valid thread, polluted by a few paranoid types.

Kayteg1

California > Nevada

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Posted: 01/05/20 11:08am Link  |  Print  |  Notify Moderator

Grit dog wrote:



Yes they do have pressure relief valves, all of them. The little "valve" on the tank part of 1 lb bottles is the relief and the valve assembly on BBQ type bottles also has one.
What makes you think they don't, aside from being the eternal antagonist?.

Another [image] from this member.

This is ASME valve with pressure relief valve.
Used on tanks, but not sold with cylinders.

[image]





jaycocreek

Idaho

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Posted: 01/05/20 11:41am Link  |  Print  |  Notify Moderator

Propane 101

All propane tanks and cylinders are required by law to be fitted with pressure relief devices designed to relieve excess pressure. ... Propane tank relief valves are also known as pop off valves, pressure venting valves or relief valves.


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jimh425

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Posted: 01/05/20 11:55am Link  |  Print  |  Notify Moderator

jaycocreek wrote:

Propane 101

All propane tanks and cylinders are required by law to be fitted with pressure relief devices designed to relieve excess pressure. ... Propane tank relief valves are also known as pop off valves, pressure venting valves or relief valves.


In other words, Kayteg1, you are wrong again.


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Kayteg1

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Posted: 01/05/20 01:14pm Link  |  Print  |  Notify Moderator

jimh425 wrote:



In other words, Kayteg1, you are wrong again.


Are you saying you have such pressure-relief valves on your cylinders, or you are trolling again?

Kayteg1

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Posted: 01/05/20 01:15pm Link  |  Print  |  Notify Moderator

jaycocreek wrote:

Propane 101

All propane tanks and cylinders are required by law to be fitted with pressure relief devices designed to relieve excess pressure. ... Propane tank relief valves are also known as pop off valves, pressure venting valves or relief valves.

You took it from the net forum? Must be truth. [emoticon]

jaycocreek

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Posted: 01/05/20 01:19pm Link  |  Print  |  Notify Moderator

I took it from here..

https://www.propane101.com/safetyreliefvalve.htm

If they did not have a relief valve of some sort,they would be bombs waiting for ignition..Common sense they have a safety factor of some sort..

Kayteg1

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Posted: 01/05/20 01:29pm Link  |  Print  |  Notify Moderator

jaycocreek wrote:

I took it from here..

https://www.propane101.com/safetyreliefvalve.htm

If they did not have a relief valve of some sort,they would be bombs waiting for ignition..Common sense they have a safety factor of some sort..

So you are quoting salesmen?
Did you ever dare to take a look at your cylinders?

jimh425

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Posted: 01/05/20 01:30pm Link  |  Print  |  Notify Moderator

Kayteg1 wrote:

Are you saying you have such pressure-relief valves on your cylinders, or you are trolling again?


All do, so mine do, too. [emoticon]

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