View Full Version : LPG hose question?

07-26-2012, 06:45 PM
Somewhat off thread but we do use LPG hose for Burners Forges etc.

In the rural environment one used to be able to buy LPG approved hose in bulk quantities at a reasonable price. The cost and aggravation of trying to deal with the new generation of service personnel is frustrating. For outside use from the regulator or bottle to a forge what is wrong with using a good grade of Air hose to deliver Propane to the Burner?

07-26-2012, 08:05 PM
New here but I think I can give you something worth knowing on this, hope it helps.

Air line will work but LP will degrade it over time and she starts to get hard and crack inside, I got about a year when I did it on a gas forge in Arizona years ago.

If you are using it between a regulator and forge or whatever where the pressure is regulated (and itís not going to get walked on) the cheap way is to head down to the auto parts store and buy rubber fuel line off a roll, gasoline and LP are both petroleum so it will hold up okay. The next best that is more durable for getting stomped on and can take full LP tank pressures can be found at a welding supply, torch and/or MIG/TIG welder hose is often sold off spools at good welding supply stores.

Now, in saving your nickels be sure you donít toss away your dollars. If you burn the shop down and your insurance adjustor finds non-LP rated hose and fittings in use you could be in trouble even if it had nothing to do with the fire . . . so it may be worth it to buy that overpriced LP gas hose even if it isnĎt any better for the job than the cheaper stuff.

The real pain is the stupid left handed fittings I can never find the correct one of, but hey, this is a machining forum isnít it.

You from Burk Burnet Texas or just Burnet? My wife grew up down there in Burk Burnet.

07-26-2012, 11:08 PM
Just bought a 25 footer today from McMaster. They have bulk hose too, but its about the same price as buying the hoses already made. (search welding hose).

I'm sure if you google a bit, and hit the welding supply places you can probably get it a lot cheaper.

I'm all for half assing and mickey mousing. Do it a lot. I encourage it.

"how to slow a wood cutting bandsaw down enough to cut nylon sheets"
"how to slow the drill press down, add another motor"

Not exactly safe, but neither one is going to burn my building to the ground either.

There are times to be a tight wad penny pincher, and there are some things that you just don't go cheap on.

Flammable gases, under pressure, near fires, just do it right, not the place to save a nickel.

Edit: just for fun: because this is the Home Shop board, and everybody is here for fun, why I needed the hose.


Mike Burch
07-27-2012, 04:49 AM
Boucher, I passed your query on to an old mate who is one of the top LPG men in NZ, and here's his response:

The problem with using Airline type hose is that the LPG will rip out the
plasticisers real quick and it will quickly become fragile PIPE and thus not
safe for that use.
A good quality Rubber LPG hose from say "Gates" or similar manufacturer
should be available in the States, tell him to try an Automotive Supplier.

Which pretty well answers it, I think.

Some years ago while I was living afloat, the miserable sod who owned the concrete yacht in the adjacent marina berth gas-plumbed his boat with condemned welding hose!!! I wasn't too happy about that, but fortunately it didn't blow up while I was next door.

07-27-2012, 07:35 AM
I was going to say to use neoprene fuel line hose as well. Barbed fittings and a hose clamp has done just fine.

michigan doug
07-27-2012, 11:46 AM
That's a nice foundry furnace you have there. Is that fire brick or some other masonry product that fulfills the same function?

Thanks in advance,


07-27-2012, 12:33 PM
That's a nice foundry furnace you have there. Is that fire brick or some other masonry product that fulfills the same function?

Thanks in advance,


Home made bricks, I made the molds and then used Pryor Giggey Cast Max 30. I used that because I could get it sort of locally, I could have
also tried some of the home brews for refractory cement, but decided to go the proven route.

Miserable miserable stuff to work with. When testing out my mold with normal old concrete, I could knock out 6 bricks in 15 minutes. This stuff
had to sit in the mold for about 4 or 5 hours before I could pull the mold off, that's if it would come off, used lots of parchment paper and Vaseline.
Not fun to mix, had to weigh out each batch, and measure the water. Then I had to make a small mixer since I was making little 8 and 12 pound batches.
Then come to find out you need a "high shear" mixer. So the little mixer started the mixing, then it was finished off in a bucket with a "high shear" attachment
on a drill (kind of like a paint mixer).


Its all painted nice now, and I made it so that I could slip a chopped down 55 gallon drum over it to keep everything contained.
Pallet sized so I can move it outside with the pallet jack. I'm pretty happy with it.

07-27-2012, 01:36 PM
I'd be happy with it too, BobW53. Very nice work.