Good Sam Club Open Roads Forum: Old style propane cylinders
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Open Roads Forum  >  Do It Yourself Modifications and Upgrades (DIY)

 > Old style propane cylinders

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Silas Carpy

Elmira N.Y.

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Posted: 08/11/21 01:16pm Link  |  Print  |  Notify Moderator

We have a 97 tt that is set up and left permanately at my mil lake property. We only use propane to take the chill off on spring/fall nights as needed. The propane has finally run out and I want to replace the old style cylinders with one 20 lb grill type cylinder. Has anyone done this? Do I still need a 2 stage regulator? Amazon has a hose with female end that looks like it will connect to rv black pipe and has a grill type regulator and type 1 fitting for cylinder. Will this suffice for our needs? Thank you.

enblethen

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Posted: 08/11/21 01:52pm Link  |  Print  |  Notify Moderator

Yes, you need a two stage regulator.
Normal threads on a regulator are 1/4 inch pipe or inverted flair. Black iron pipe on RVs is 1/2 inch.


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Posted: 08/11/21 01:56pm Link  |  Print  |  Notify Moderator

LPG is Liquid PG that converts from high pressure to low pressure so YES you must use a pressure requlator. So you need an adapter from your tank to your regulator or a new regulator or both.

Check Amazon etc for all types of adapters. Suggest you get help as it's very desirable to have the correct connections.


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Posted: 08/11/21 02:04pm Link  |  Print  |  Notify Moderator

What are the "old" type cylinders?

If it's just the old style valve in the tank, just swap it out for a full tank.


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Silas Carpy

Elmira N.Y.

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Posted: 08/11/21 03:00pm Link  |  Print  |  Notify Moderator

From what I’ve read, my class c tank has asme type and tt will have dot cylinder. I guess by old style I mean whatever was put on tt circa 1997 (pol?) which is too small for type 1 fitting. Color me stupid but I thought that cylinders that won’t connect to type 1 were no longer legal. If that is not correct then I guess maybe I can just fill or exchange what I have.

camperfamily

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Posted: 08/11/21 03:01pm Link  |  Print  |  Notify Moderator

Yes, you should retain a two stage regulator. A search on amazon or a local supplier should yield new pigtails to put between the regulator and the newer style tank. If you only wish to use one tank, just swap on side and leave the other in place unless you secure and use a regulator used for a single cylinder. I've witnessed the changeover portion of a regulator fail and allow a tank to empty out when the second cylinder was not in place.


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Posted: 08/11/21 03:32pm Link  |  Print  |  Notify Moderator

I imagine things are the same in the US as they are in Canada? The newer style valve still has internal threads that will accept the old style hose.

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Silas Carpy

Elmira N.Y.

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Posted: 08/11/21 06:47pm Link  |  Print  |  Notify Moderator

Thanks all.

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