PVC Tube for propane?

[IrieGuy05]

So can I run propane through pvc tube? I needed it cause I need to hook up to a barb thats too big for 3/8 propane line. Its braided and rated to 150 psi. I'm just wondering if I'll get some gunk in the torch from it.. it said on some sheet by the tubing it had excelent propane resistence, its just I got a new torch and I really don't want to gum it up inside.

[RCglass]

At first i pictured white pvc water pipe.
But your talking about clear braided tube for pop machines and whatever they use it for,so it should be fine.
What type of torch has such a big barb?
-ryan

[PyroChixRock]

Make damn sure it has no oils in it!

[Julian]

I have some vague idea about 'flushing' the pipe with nitrogen to get rid of the oils... but is this really the place to get definite answers about stuff like that? How the hell would we know? Can you call the manufacturer, or ask your welding place or something?
( I mean, when it comes to blowing yourself up or destroying your torch, I'd want better information than just what some weird people on the forum have to say)

[IrieGuy05]

I was at the welding store today, they can't tell you anything thats not osha or whatever standerd they go by. Even tho they told me some hose they had would probobly be ok, they couldn't find a size to fit this metric connector i had. I tried the hose with propane earlier no problems, like blowing up. Just wondering about shit coming off and gunking my torch up. I got a way around using the pvc tubing that I just thouight off, Thanks tho :D

[somberbear]

it sounds like you got braided silicone or vynil.

in therory yes it will work. I have seen this used for oxy and propane...

Would i do it. no.
Sence welders grade t hose if fairly easy to order and fairly cheap like 30 bucks for 25 feet and its rated for this work thats what i would use.

its main plus is that it is hard to melt threw. so when you drop something you dont have to worry about a plastic smell so much. most of these hoses will not have oil in them . but over time off gas. and being in a strange enviroment not moving water or food or regular air i wouldnt known how long they would last till they started to decompose. I i know a few studios that use vynil for quite a while and havnt had a trouble.

But all said and done welder grade T hose is the best choice for the job. And remeber some hose clamps. if its pre mix you will want a set of flash back aresstors.


for a solid pipe connection they make secduled piping for it. its pricy.

[dellis326]

PVC is not resistant to petroleum products. Propane is made from petroleum. It would probably work for a while as it slowly broke down. Then will start to leak, usually at a most inopportune time.

[Dale M.]

What you really want it grade "T" welding hose, or any hose that is stamped or embossed saying that it is "propane or natural gas approved" ... Anything else you are taking risk that hose will deteriorate and flecks and pieces will break loose inside and eventually plug torch...

IF information is not stamed on or embossed into hose, sheet of paper next to hose could be for anything maybe even the hose you are looking at, then maybe not.

Also check pressure rating of hose.... That information should be stamped on hose also... A little more work and research will make you happy camper...

Check local phone book for dealer that specializes in hoses of all kinds. I dont trust clown in hardware store.

Dale

[somewhere]

We use a yellow pvc for propane. My gas supplier has it and we have a variety from 1/2" to 2 3/4" run underground and under the slab where the hot shop is. I don't think regular white pvc will work or at least not to code. The yellow pvc comes in rolls and has special compression fiittings that make connections a snap. The yellow stuff only has a pressure rating of ?50lbs I think but if you use it make sure. The gas co. also has a variety of manifolds availabe that make plumbing easy. We have at least 10 regs on one manifold mounted on the back wall of the shop. Even though they are all ventless regs they made us mount the manifold in a window (actually just cut a hole)so it would still be considered outside but allows us access from the inside. Look in the phone book for the wholesale propane parts dealer. Not the place that sells the gas but the place that sells parts and such for the tecs. This really is only for the outside plumbing in the shop. Inside we use 3/8" grade T welding hose.

[Mike_Aurelius]

NO NO NO...DO NOT DO THIS.

NFPA and *most* building codes call for metal, either hard or soft wall, or the flexible metal tubing.

Rubber, "T" grade hose is for "temporary" installations only.

I just went through all this with my local building inspector and fire inspector. They wanted metal all the way through my studio, but I was able to show them in the code where I could use the grade T hose, although they were not happy about it, they did allow it (under the benches where it cannot be abraided, stepped on, or melted by flying hot glass).

If it's plastic of any kind, it can burn in a fire, and if the line is pressurized with gas, when it melts, it will cause an explosion when the propane depressurizes the tank.

Very Bad Idea.

[Dale M.]

Excuse me....

Believe the origional question was a hose to go on a 3/8 barb that connects to a torch...

I think this hose thing is suddenly way out of perspective....

Dale

[Greymatter Glass]

I use 3/8" flexible Tygon PVC for propane and oxy... no problems yet. Of course, as Mike mentioned, this isn't the SAFEST route and probably not 100% legal, but as a material, I haven't had any problems with it in at least a year of using it.

Also, you can buy "T" grade hose in bulk from McMaster-Carr for like $1.20 a foot in 3/8" single bore (just one hose, not the twin line)

-Doug

[somewhere]

Tell it to my gas company. They installed It was inspected and approved. All the plastic pipe I'm talking about is burried with tracer no hard pipe. This is all to code. From the manifold we used 3/8" grade T welding hose. I have several places I needed high pressure and for that we used 2" black Iron. The black iron can carry full tank pressure. The flexable metal is for low pressure aplacations only.

[Dale M.]

Here is interesting article on gas piping.

http://ops.dot.gov/regs/small_lp/Chapter3.htm

Note the use of Polyethylene piping and Not PVC (polyvinylcloride)

Dale

[somewhere]

Yes polyethylene piping not PVC.
This should not be confused. My first post is incorrect as far as I called it yellow pvc. Thanks Dale

[Mike_Aurelius]

Plastic, polyurethane, pvc, they are all designed to be used UNDERGROUND...and the reason is that underground they are not exposed to environmental issues, such as sunlight which will degrade the product, or damage by mechanical means.

"As PE must be installed below ground, risers are commonly used to connect the underground PE to aboveground piping materials."

[Greymatter Glass]

bump...

Hoses are for losers

Plumb it all in with 50x9 Schott BoroArtistic to the torch.

yeah, it's a bit rigid, but what can you do?

[Dale M.]

bump...

Hoses are for losers

Plumb it all in with 50x9 Schott BoroArtistic to the torch.

yeah, it's a bit rigid, but what can you do?

You must be bored today....

Dale

[Greymatter Glass]

Oh you have NO idea....

[phab]

Tell it to my gas company. They installed It was inspected and approved. All the plastic pipe I'm talking about is burried with tracer no hard pipe. This is all to code. From the manifold we used 3/8" grade T welding hose. I have several places I needed high pressure and for that we used 2" black Iron. The black iron can carry full tank pressure. The flexable metal is for low pressure aplacations only.

...we laid miles of that shit for hewlit packard job. actually it was the gas company. the pipe is plastic in a coil and the couplings are welded (melted) into place.

as far vynal or plastic. id like to see how manufacturers hook up and test their torches. i agree with somberbear that t grade hose takes the guess work out of it but yeah, gas main supply pipe is all plastic but its not run of the mill sprinkler system plastic.

[phab]

Plastic, polyurethane, pvc, they are all designed to be used UNDERGROUND...and the reason is that underground they are not exposed to environmental issues, such as sunlight which will degrade the product, or damage by mechanical means.

"As PE must be installed below ground, risers are commonly used to connect the underground PE to aboveground piping materials."

...this sounds spot on. its when you expose the supply line that shielded materials are code. same as electrical wire being shielded when exposed to the same elements.

[Dale M.]

Here is some information on plumbing with polyethylene....

http://ops.dot.gov/regs/small_lp/Chapter3.htm

Dale

[michaelangeloglass]

Just make sure you use pipe dope for the connections, not tape!

I just ran lines, with brass tee's , it was cheap, and effective.

[WIZARD WORXXX]

So can I run propane through pvc tube? I needed it cause I need to hook up to a barb thats too big for 3/8 propane line. Its braided and rated to 150 psi. I'm just wondering if I'll get some gunk in the torch from it.. it said on some sheet by the tubing it had excelent propane resistence, its just I got a new torch and I really don't want to gum it up inside.

BETTER TO BE SAFER THAN SORRY WHEN IT COME TO THE GAS LINES ,PHONE BOOK =HOSES=R=US THEY WILL HAVE EVERY FITTIN AN PUT IT ON THE TYPE HOSE YOU NEED,OILS ARE BAD,PLASTIC S ,MAID WITH OIL,MMM=KAY

[jr23]

Once again Wizzard Worxxx. What the f@#k is all the caps about. If you really want any respect/ serious response to your post. You should use the caps for there intended purpose. Some consider it shouting I just think its plain hard to read.

[Johan]

Your Hair Smells Like Cinnamon!!!!!!!!

[homeblown1]

I hard lined my propane with black iron pipe, "3/4 in.
I used rectors to seal each connection but some of them cracked and leaked. Is teflon tape not a good seal at each union?

[Firekist]

hey mike, wanna share where that was in the code?

oh.. gtt's old original hoses were the same braided hose you find in the hardware store... for what it's worth.

z--seth

[Mike_Aurelius]

NFPA 58, off hand, not sure which section, I'll have to go look it up when I get a chance.

[Dale M.]

I hard lined my propane with black iron pipe, "3/4 in.
I used rectors to seal each connection but some of them cracked and leaked. Is teflon tape not a good seal at each union?

Teflon tape is NOT a sealant, its a thread lubricant so you can properly tighten the "mechanical connection" of the threads....

Its the taper in the threads meshing with each other that causes the seal..

Dale

[homeblown1]

Thanks for the info. Dale,
I just found a yellow, gas safe teflon tape I can use instead.
Brad
http://www.glasspipes.org/Gal668_Brad_s_Gallery.asp

[HiAltitude]

JBWeld. Stops all sorts of leaks.

[Dale M.]

Thanks for the info. Dale,
I just found a yellow, gas safe teflon tape I can use instead.
Brad
http://www.glasspipes.org/Gal668_Brad_s_Gallery.asp

Actually plain old white TEFLON is just as good and has same properties as yellow (gas) or green (oxygen) safe tapes..... It's just that certain industries require tape to be identified by its color for a specific application, like green for oxygen connections in medical industry....

Data is here in about 5th paragraph down :http://en.wikipedia.org/wiki/Thread_seal_tape

Dale

[homeblown1]

Thanks Dale,
That's kind of what I thought. I used regular white tape and had good success. The rectors that everyone swears by is just plain messy and it leaked. I might not have gooped the threads enough though too. I also learned that in my town of Bellingham, the city does not allow the sale of the yellow tape? Some kind of wierd city ordinance? I just wasn't sure if the propane was going to eat the tape or not. I think I'll stick with it unless I smell propane again.
Brad
http://www.glasspipes.org/Gal668_Brad_s_Gallery.asp

[byron3]

Most of you folks do realize this thread is from 2005. If the OP has not got that hose run yet it's probably not gona happen. Sorry to interrupt, carry on.

[Dale M.]

But there is good information for the "late comers"....

Dale

[ShepherdCreations]

http://www.coleparmer.com/TechInfo/ChemComp.asp

Just compatibility info, kinda neat tool :)

[nafglass]

Once again Wizzard Worxxx. What the f@#k is all the caps about. If you really want any respect/ serious response to your post. You should use the caps for there intended purpose. Some consider it shouting I just think its plain hard to read.

Seriously!


Most of you folks do realize this thread is from 2005. If the OP has not got that hose run yet it's probably not gona happen. Sorry to interrupt, carry on.

Wizzard resurrecting another oldie but goodie!

[HaulAss]

"Most of you folks do realize this thread is from 2005. If the OP has not got that hose run yet it's probably not gona happen. Sorry to interrupt, carry on.
__________________


He got it yo..