Oxy/Acetylene pipinng

[AMALGAM]

Hey you guys

I do not even know if the title makes any sense, but it was the only one that came to my mind:D this is what i want to do: I have a new space for my shop, I want to storage my oxy/acetylene tanks in a small closet outside this area and open a whole on the wall and bring a connection from the tanks to the wall inside my studio. My questions are: a) how can I make this connector? and how can I control the flow from inside? does any of you has done this and have a picture that can share with me? Thank you so much for your help

Alfredo

[Broccoli1]

Makes sense:)

You will have a set of regulators at the end of the Piping.

I don't don't know how it is exactly set up but I know it is possible.

Check with you LWS and see what they suggest as you'll probably purchasing all the pieces from them anyway.

[hankj]

The only way to regulate your pressure/flow from the inside end of your plumbing will be to use high pressure pipe for the oxygen, and 600 psi piping for the acetylene.

Terminate the plumbing on an appropriate, rigid fixture, put the correct ends on the pipes for your regulators, connect the regulators, and there ya go.

Another approach for the O² might be to use a regulator on the cylinder, run low pressure hose inside, set the cylinder regulator high (say 60 psi) and put another regulator inside that you can use to fine tune from.

Hank

[Bob the Welder]

You may consider putting your regulators on your bottles in the normal manner then having a short run of hose to Sch.40 steel (black iron) pipe. The iron pipe will terminate wherever you want with ball valves on the end with appropriate fittings to connect your torch hose to. You can use screw pipe:eek: or sockets to weld;) your pipe. A lot cheaper than buying heavy wall pipe for pressure.

[Pumpkinhead]

my input:
don't do it.
if you do, you NEED TO USE OXYGEN SERVICE PIPE AND FITTINGS ONLY.
don't do it.
check with your fire marshal, what you plan is not allowed in most cases.
don't do it.

[Broccoli1]

my input:
don't do it.
if you do, you NEED TO USE OXYGEN SERVICE PIPE AND FITTINGS ONLY.
don't do it.
check with your fire marshal, what you plan is not allowed in most cases.
don't do it.

Why?

The school had this set up. Tanks around the corner and Regs at each station.
:confused:

[Some Creep]

This is done at a place I used to work at. The tanks are exchanged outside by the gas provider and are connected by high pressure hard lines into the building. This is done because of the large number of different gasses and for building security (precious metals). They did ALOT of tanks...I'm talking 16 per carrier, 10 carriers. Lifted by a crane on the back of the truck.

I agree with Mr. Head:

Don't do it.

High pressure pipinng isn't for the novice and the cost / risk aren't worth it.

[Pumpkinhead]

as long as it's correctly installed and inspected and the FD has knowledge of it's existance, go for it. WITH OXYGEN SERVICE FITTINGS


a short run of hose to Sch.40 steel (black iron) pipe.
black pipe is for gas service, natural gas, not any gas, definatly not compressed oxygen gas.

[calweld]

Two problems I see:

Pure oxygen, under pressure, will spontaneously combust in the presence of even a small amount of oil ... and most threaded pipe has oil in it. Trying to clean the inside of a pipe with solvent or something would be a gamble ... and even the solvent might be a hazard ...

Acetylene is unstable over 15 psi ... so you would need a pressure regulator at the bottle, before going into the pipe. I have seen and worked in plants with piped fuel gas, normally propane or MAPP was used, neither of these have any problems at pressure.

[Bob the Welder]

Pumpkinhead is absolutely right about the oil and oxygen combination! Don't use threaded pipe. My bad.:o Will attribute it to the late hour of posting.:rolleyes:

Have seen several setups just as I described. Regulators on bottles with a short section of torch hose attached to steel pipe (of some type) with socket weld fittings. Pressure is set at bottles so you do not have high pressure at any point in piping.

May require special service pipe for such a job. Have never come across any made specifically for O2 use. Definitely something to check into with building codes, insurance, etc.

[Bob the Welder]

http://hghouston.com/dcforum/DCForumID2/252.html

http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/REDLINE_PAGES/G88.htm?E+mystore

Check this out. Pumpkinhead knows his stuff! I stand corrected. But pipes were steel, just painted for different gasses.

[tailshaft56]

I know it's possible to plumb in Oxy. Most if not all hospitals do it. I suspect they use a low pressure but I'm guessing at that. I do know you will see the bulkheads in the hospital rooms. They appear to be stainless. IIRC

[Sparkeee24]

Howdy Howdy!

i want to continue reading questions form you on this forum. DON'T DO IT! Some things are just too dangerous to be lazy over. There are a few ways to do it correctly, and soooo many ways to do it wrong. Brian Lee Sparkeee29

[Sparkeee24]

Howdy Howdy!

How about making a whole in the wall large enough to walk through and access the tanks without walking all around the building. Like a door. Or if nead be, a service door large enough to get your hands in, like a hand hole. Store all your hoses on the tank side of the service hole. all your doing is moving hoses, not tanks around. And you can reach and adjust guages easily. Lets wiork on some alternative safe ideas. brian Lee Sparkeee29

[Rocky D]

Not something I would do either...I want my tanks where I can get my hands on them quickly.

[Pumpkinhead]

there is also another problem with "closeting" your cylinders, that is ventilation, although the risk is slight that the room would be so airtight that the build-up of gas from a tiny 'leaker' would happen, it could, and oxygen in this instance is as dangerous as fuel gases, if not moreso.

[seamutt]

Everybody had really good advice all I can add is that the tank regulator is not the same as the hose end regulator, these are two separate regs and the intermediate pressure (in the piping /hose between the two regs) typically runs 150 to 300 psi NOT full tank pressure.
The most important part is the "Oxygen clean and service": Pumpkinhead hit this one squarely.
"Service" means every part of the system that touches oxygen is certified for oxygen use, no cheating or else you are going to be talking to the Fire Marshall /EMT/St. Peter. This is very real. Oxygen deteriorates o-rings valve seats and anything that corrodes or rusts at a ridiculous rate.
"Clean" means clean for oxygen use and is time related, if it sits too long without completion it has to be done again. All Pipe, elbows, gauges, valves, connections, flanges, relief valves, little bent piece of pipe thingy you stuck on because it looked cool, everything must be clean, pipe sealant must be oxy certified. If you pressure test the system with shop air you just contaminated the system and you have to clean it over again.

I'm with Sparkee: get a hose reel and a hundred feet of hose, fewer headaches. $200 at "Discount welding and pizza joint" (live bait on fridays).
There is a cool valve thing I saw somewhere that shuts off both gases locally when you set your torch back in the little holder, cant remember where I saw it though.

[Broccoli1]

Seamutt,

This what yer talking about?

Gas Saver

[seamutt]

yea! that's the thing.

[tailshaft56]

The gas saver does have a pilot to relight the torch with. I think it's primarily for brazing.

[Rocky D]

Here's a chi-com one...has pilot....I used them for silver brazing, and also way before the Syncrowave, when, for TIG, we were using WWII Hobart generator machines, we has these for gas control...we ran the argon through them, and every TIG weldor had one on his bench. I thought they were made by Victor, but I couldn't find any info on that model.
http://www.daishinusa.com/brazing/img/gas_01.jpg