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Old 06-13-2024, 09:23 AM   #1
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Question on LP hose for outside gas griddle.

My TT came with a 4' LP hose that connects to a quick connect fitting under the trailer to run the Suburban gas griddle that came with the trailer. I found I want to move the griddle farther away from the trailer so I bought a 12' hose from Amazon advertised for exactly my intended use. The original hose is rated to comply with UL-21, which I find is a high pressure gas hose rated at 350 PSI maximum. The new hose from Amazon is rated to comply with UL-569, which is a low pressure gas hose with a 1 PSIG max stamped on the hose. Looking up UL-569 I see the standard states the hose must also be able to withstand a 350 PSI pressure.


The griddle itself has it's own regulator where the hose connects. The hose I bought from Amazon has hundreds of positive reviews using it for what I want to use it for. I'm not sure of the LP pressure at the underbelly connection block for the griddle, but I seem to recall the LP tank regulators step down the gas pressure in 2 steps to something like 0.4 PSI. I also know that PSIG is different than PSI as it basically zeros out the atmospheric pressure of 14.7 PSI. I'm not sure if that is important here but seems it would be at pressures of 1 PSI.


I'm hoping someone here will know if the new hose from Amazon is going to meet the safety standard for my intended use. Thanks for reading.
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Old 06-13-2024, 09:47 AM   #2
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I have been using the Camco 10ft one for years can’t even find a UL rating and it’s been fine the quick connects under the camper are low pressure
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Old 06-13-2024, 10:00 AM   #3
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The LP lines after the main tank regulated at "11 inches of water" pressure. That is equivalent to just under 0.4psi. I don't think you need to worry.
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Old 06-13-2024, 11:29 AM   #4
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I have been using a 12 footer from amazon for a few trips now with no issue. Probably the same one that you bought.
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Old 06-13-2024, 11:40 AM   #5
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Does your Amazon product have a brand name or a vapor pressure approval marked on the hose? I tend not to buy "generic" products from Amazon due to most of them being cheap chinese look-a-like products.
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Old 06-13-2024, 11:58 AM   #6
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Thank you to those that replied to this question, and I agree, I should be just fine with the new hose from Amazon. I located the manual for the Easymatic 924N automatic regulator that's on the two 30lb LP tanks. It states the second stage drops the pressure to 11" wc, and as jbflag pointed out, that's 0.4 PSI. I tried the new hose out and it works fine.


DW asked if the hose has a brand name and proper certification labels, and it does. It has the UL-569 stamping and other regulatory labels and it's made by Pearl River. And if you Google Pearl River LP hose with any stock number or specification you'll get numerous hits for a 2021 recall of Pearl River LP hoses supplied with Flame King LP torches for burning brush. That doesn't make me nervous, I'm sure they learned their lesson. Just like recalls that come out of Detroit.
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Old 06-13-2024, 12:07 PM   #7
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Okay, you should be good with that hose. The reason I raised a "caution" is because I've seen cases where cheap air hose has been passed off as LP hose. Regular air hose runs about $1/ft while LP hose runs around $5/ft.

Just sayin'.
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Old 06-13-2024, 12:11 PM   #8
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DW, you're right to raise the caution flag on this. Before I ordered the new hose I was contemplating just splicing in a section of fuel line or air line with the proper diameter. Then I had thoughts of how that would bite me in the backside if something were to go wrong and it was found.
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Old 06-13-2024, 01:52 PM   #9
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OP you stated your grill has its own regulator. I question this as if the gas line you connected to is actually low pressure you would not need another one and it would cause issues. Is it possible the connection is actually high pressure?
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Old 06-13-2024, 02:12 PM   #10
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Odyknuck, I thought of that, but there is only one main line that comes off the LP tank regulator and that branches off to feed all LP points. Checking the manual for the Suburban griddle it states that the manifold pressure is 10" WC and the max inlet pressure is 13" WC. So it must be designed to work on low pressure and the regulator is just dropping it to 10".
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Old 06-13-2024, 09:23 PM   #11
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Ok then I would just run it as it sounds like everything is as it should be.
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