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Let me say right up front (A) I have decades of experince fueling and servicing engines running on propane but no experience with welding gases other than exchanging bottles and using gas torches. (B) I have dealer fill my 500 gallon propane tank that fuel's house and shop. I fill forklift and grill bottles from the 500 gallon tank so noone inspects bottles unless I request it. 20 Lb grill bottle is too fat for the cart so I'd like something about the size of 60-80 cf acetylene bottles. I have 100 Lb propane bottles but they are waaayyy to large and heavy for a cart. I've heard in addition to acetone,there's solid substance/material in acetylene bottles. Is it easily removed? I'd love hearing from people like psacustomcreations that cut alot of bottles open. Medical oxygen bottles are dime a dozen around here. If threads in other gas bottles with high pressure ratings are same as acetylene,I can get valves switched. Other than building/buying larger cart,any info and suggestions appreciated.
Reply:I have put a 12" propane bottle on my torch cart before. Just ratchet-strapped it on to the axle since it sits low. Maybe your cart is a small one? Almost all propane bottles I've run across that are designed to be moved are 12" diameter.Do you mind saying why you wouldn't consider getting a cart that would handle a standard diameter bottle? PS - I used a 60 lb tank from Manchester in my International, and it'd be sized right, height-wise, for a cart. It also had standard acetylene threads so I could use an acetylene-style cap on it vs the neck ring that most LP tanks have. Check out Manchester's website to see if they might have other options.
Reply:I have a propane forklift but its a liquid draw. When i had to fix the valve on one of my 33lb lp tanks i put a vapor valve for a forklift on it too. Was planning on using it for a torch as most 33 pounders have the bleeder valve so i can siphon fill them off my 500 gallon shop tank. It was terrible getting the vapor plug out of the tank. I had to completely drain the tank then pull the center gauge, fill with water, then heat the plug just to get it out. Grill tanks just look tacky on a torch cart in my opinion but they're plentiful. Not sure how heavy a AC-4 tank is but possibly a little heavier than 33 lbs?
Reply:
Originally Posted by Jax
Let me say right up front (A) I have decades of experince fueling and servicing engines running on propane but no experience with welding gases other than exchanging bottles and using gas torches. (B) I have dealer fill my 500 gallon propane tank that fuel's house and shop. I fill forklift and grill bottles from the 500 gallon tank so noone inspects bottles unless I request it. 20 Lb grill bottle is too fat for the cart so I'd like something about the size of 60-80 cf acetylene bottles. I have 100 Lb propane bottles but they are waaayyy to large and heavy for a cart. I've heard in addition to acetone,there's solid substance/material in acetylene bottles. Is it easily removed? I'd love hearing from people like psacustomcreations that cut alot of bottles open. Medical oxygen bottles are dime a dozen around here. If threads in other gas bottles with high pressure ratings are same as acetylene,I can get valves switched. Other than building/buying larger cart,any info and suggestions appreciated.
Reply: "Do you mind saying why you wouldn't consider getting a cart that would handle a standard diameter bottle?"I don't mind at all saying why I don't want a different cart that will handle a standard grill bottle. #1 as ferret says grill bottles look tacky on a cart. #2 The cart must be wider which make's it less manuverable in crowded areas #3 I custom built my present cart with motorcycle tires for rough terrain,I'm quite proud of it and have no desire to get rid of it #4 A size 4 oxygen and size 3 acetylene fit perfect,balance well and look normal so I'd like to retain that.In spite of me stating "Other than building/buying larger cart,any info and suggestions appreciated" do you mind saying why you embarked on it nonetheless?
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Originally Posted by ferrret3238
I have a propane forklift but its a liquid draw. When i had to fix the valve on one of my 33lb lp tanks i put a vapor valve for a forklift on it too. Was planning on using it for a torch as most 33 pounders have the bleeder valve so i can siphon fill them off my 500 gallon shop tank. It was terrible getting the vapor plug out of the tank. I had to completely drain the tank then pull the center gauge, fill with water, then heat the plug just to get it out. Grill tanks just look tacky on a torch cart in my opinion but they're plentiful. Not sure how heavy a AC-4 tank is but possibly a little heavier than 33 lbs?
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Originally Posted by Oldiron2
Unless you cut the bottle open, getting the fill out is nearly impossible and depending on the age of the bottle, the fill may contain asbestos. When inspected, acetylene bottles are checked for voids caused by settling of the content, and for the solid being saturated by the acetone. As you may know, the gas dissolves in the adsorbed acetone, but if voids exist, the compressed gas there is unstable. I don't know regulations about bottles, or if any/all would apply to an individual on his own property, but would think any other (except acetylene) type of high pressure cylinder with a much higher rating would be safe, if it had the correct valve attached and was otherwise in good shape.
Reply:
Originally Posted by Jax
Based on what I've always been told,I suspected stuff inside acetylene cylinder would make it more trouble than it's worth. Hopfully I can confirm threads in another type without having to buy it and trial fit valve just to find it won't work. I'll keep my antenna up for a medical oxygen. Most are skinner than I prefer but I've seen regular #4s with med valves. Given opertunity I'd nab as many of those as I can get at the right price.
Reply:If you can find one a 25 lb propane cylinder will be a close match to a #4 acetylene.
Reply:
Originally Posted by Jax
[B] In spite of me stating "Other than building/buying larger cart,any info and suggestions appreciated" do you mind saying why you embarked on it nonetheless?
Reply:
Originally Posted by ferrret3238
Grill tanks just look tacky on a torch cart in my opinion but they're plentiful.
Reply:Some folks have bought a Proplylene or Chemolene tanks, Ran it dry and filled with propane instead. Same size as a #4 but no fire brick material inside.Thermal Arc 320SP ( Lorch )Cobra PythonsThermal Arc 300 AC/DC ( Sanrex )ESAB 301i AC/DC ( Lorch )Thermal Arc 161STL ( WTL )Thermal Arc 190S ( Sanrex )Cut Master 82, 42. Cut45 ( WTL )Victor Gas Apps.Boxes and boxes of welding crap.
Reply:I suppose I should clarify. A small squat bbq propane tank looks out of proportion on a cart with a tall bottle of oxygen. JMO of course. Definitely not the fault of the bottle. They look okay on their own. Heres a weed burner torch cart I made that holds a single bottle.
I have a soft spot for the traditional look of oxy-acetylene carts..
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Reply:
Originally Posted by Lis2323
Reply:The tanks are about same for cutting oxygen and Medical oxygen bottles sometimes the valve are different. But down side is Medical oxygen bottles are aluminum and fails testing and you can not get the bottles filed. FYI cutting oxygen is a higher grade than medical most time they fill with same oxygen. Dave
Originally Posted by Jax
Let me say right up front (A) I have decades of experince fueling and servicing engines running on propane but no experience with welding gases other than exchanging bottles and using gas torches. (B) I have dealer fill my 500 gallon propane tank that fuel's house and shop. I fill forklift and grill bottles from the 500 gallon tank so noone inspects bottles unless I request it. 20 Lb grill bottle is too fat for the cart so I'd like something about the size of 60-80 cf acetylene bottles. I have 100 Lb propane bottles but they are waaayyy to large and heavy for a cart. I've heard in addition to acetone,there's solid substance/material in acetylene bottles. Is it easily removed? I'd love hearing from people like psacustomcreations that cut alot of bottles open. Medical oxygen bottles are dime a dozen around here. If threads in other gas bottles with high pressure ratings are same as acetylene,I can get valves switched. Other than building/buying larger cart,any info and suggestions appreciated.
Reply:I will leave the cart design to others to comment on. Since you asked about cylinders, I will stick to that. If I understood you correctly, you want to repurpose some type of 6 to 8 inch diameter gas cylinder. Height is not really an issue and the cylinder can be 2 to 4 feet tall. Your goal is to put a standard propane valve similar to what is on BBQ tank on this cylinder. Those valves use an NPT thread going into the cylinder. A scuba tank and the thinner diameter medical oxygen cylinders usually use a straight thread with a gasket or o-ring so those are out. Unless you find an old cylinder which uses 1/2" NPT from what I have seen. Larger medical and welding oxygen cylinders usually have an NPT thread into the cylinder. Most welding gas cylinders have a valve with an NPT thread.It sounds like you going to fill the new cylinder with liquid propane from your larger tank? That is not something I have tried so do not know anything about. From what I have just done a quick Google search on, it looks like the propane is around 200 to 300 psi as it off gases. I might be wrong.I have never cut into or messed with an old acetylene cylinder due to the hazards. I have no intention of doing it. I have cut apart old liquefied natural gas and propane cylinders. On those I removed the valve and filled with water. Since you just want to re-valve a cylinder, cutting into one is irrelevant. Welding web member Shootr cut apart an acetylene cylinder not too long ago. You can see his pics in one of his threads if you are curious. Sent from my SM-G996U using TapatalkMillermatic 252 MIGMiller Dynasty 200DX TIGMiller Spectrum 625 PlasmaAltas 12x36 Metal LatheBridgeport Milling Machinewww.psacustomcreations.com
Reply:
Originally Posted by psacustomcreations
I will leave the cart design to others to comment on. Since you asked about cylinders, I will stick to that. I appreciate that and your observations enlightened issues I wasn't aware of. Most important from the standpoint of safty you reminded me of somthing I knew but hadn't considered until you metioned it. Straight vs tapered threads. The first time I became aware was installing a natural gas furnace. I wound up stripping threads attempting to get a joint tight, all the while
some guy in the Far East that manufactured the brass. Welding web member Shootr cut apart an acetylene cylinder not too long ago. You can see his pics in one of his threads if you are curious. I've discarded idea of acety tank for this project but out of curiousity will check out Shooter's pics. Sent from my SM-G996U using Tapatalk
Reply:I am not filling the wrong bottle with the wrong gas. Smaller diameter will effect the gas rate. Change the cart, use standard stuff.www.urkafarms.com
Reply:Why not use a propane tank from a forklift? Its not as tacky looking as a bbq tank and I recall smaller diameter.Miller Trailblazer Pro 350DMiller Suitcase MIGMiller Spectrum 2050Miller Syncrowave 250DXLincoln 210MP
Reply:Those are liquid mostly, prolly no reason couldnt put a vapor valve on it. A 30# tank would look more proportional but this is something I would get over or make a dummy extension for the bottle for appearance if it really is an issue.
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Reply:
Originally Posted by scsmith42
Why not use a propane tank from a forklift? It’s not as tacky looking as a bbq tank and I recall smaller diameter.
Reply:
Originally Posted by scsmith42
Why not use a propane tank from a forklift? It’s not as tacky looking as a bbq tank and I recall smaller diameter.
Reply:Why not use a 30 lb rv tank.
Reply:Propane lasts a while compared to the oxygen. 10 pound propane will be enough for 2- 125 cu ft of oxygen. It will seem pretty small comparatively but the smaller diameter would fit and it is plenty especially with your ability to fill onsite. https://www.amazon.com/Flame-King-YS...s%2C105&sr=8-2Last edited by danielplace; 6 Hours Ago at 09:14 PM. |
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发表于 2022-2-9 15:52:03