Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Welding

SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 01-12-2012, 05:54 PM
allessence's Avatar
allessence allessence is offline
Gadget Girl
 
Join Date: Jul 2009
Location: MA, 01543
Posts: 6,426
Default Union Carbide Regulator/ Flowmeter :)

Few year back I had stumbled across a Union Carbide R502 2 stage flowmeter.. I really like it. Don't really know why it just makes sense to me. I like the selectable flowmeter..

Anyhow, I picked up the 2 stage on ebay and it needed a good cleaning.

then a few weeks later I picked up a single stage reg that you guys have seen in some of the pictures.

Turns out the regulator started life way back and is still produced by ESAB.

I ended up getting these 2 beauties for little money and they look about brand new.. I'm going to order a second stage spring spring and convert them into a 2 stage unit which new retails for between 400-550.00

I'll post up some pictures as I convert these to 2 stage unit to.
Attached Thumbnails
Click image for larger version

Name:	IMG_2487.jpg
Views:	267
Size:	97.5 KB
ID:	86252   Click image for larger version

Name:	IMG_2488.jpg
Views:	218
Size:	98.8 KB
ID:	86253   Click image for larger version

Name:	IMG_2489.jpg
Views:	207
Size:	91.6 KB
ID:	86254  
__________________
_________________
Jennifer

If I defend myself I am attacked.

My meaningless thoughts are showing me a meaningless world.

My attack thoughts are attacking my invulnerability.

I'd like to think of something smart, but I don't want to hurt myself.

My google+ page

DoALL 36"
Another Johnson model J Project
Lathe? Maybe..... 1958 SBL 13"
Yeti Esseti Aka running welder on 3phase.
Reply With Quote
  #2  
Old 01-13-2012, 09:56 AM
Floptop's Avatar
Floptop Floptop is offline
Elite Member
 
Join Date: Mar 2006
Location: Blackie, AB. Canada
Posts: 1,583
Default

I'm looking and listening.
__________________
why do all my favorite pastimes, except one , require a helmet?
Reply With Quote
  #3  
Old 01-25-2012, 09:28 AM
allessence's Avatar
allessence allessence is offline
Gadget Girl
 
Join Date: Jul 2009
Location: MA, 01543
Posts: 6,426
Default

Few days back I took the regulator bodies apart and hooked them in series.

The check valves on both were leaking.

So, yesterday I ordered all the part need to rebuild them..

Turns out the rebuild parts are pretty inexpensive..

I ordered 2 sets to have one extra set on hand..

Like 28.00 for all the parts.
__________________
_________________
Jennifer

If I defend myself I am attacked.

My meaningless thoughts are showing me a meaningless world.

My attack thoughts are attacking my invulnerability.

I'd like to think of something smart, but I don't want to hurt myself.

My google+ page

DoALL 36"
Another Johnson model J Project
Lathe? Maybe..... 1958 SBL 13"
Yeti Esseti Aka running welder on 3phase.
Reply With Quote
  #4  
Old 01-26-2012, 08:49 AM
22-W's Avatar
22-W 22-W is offline
Senior Member
 
Join Date: Jan 2012
Location: Maine
Posts: 994
Default

allessence,
I have a single stage regulator/flowmeter like the one you posted. It is labeled as a oxygen therapy unit. It is nothing that I will use. If you want it, you can have it. It looks perfect. I'm sure you could at least use the gauge, housings, etc.
Reply With Quote
  #5  
Old 01-26-2012, 03:41 PM
allessence's Avatar
allessence allessence is offline
Gadget Girl
 
Join Date: Jul 2009
Location: MA, 01543
Posts: 6,426
Default

Hi, Thanks.

If not as a welding regulator then maybe for my Oxygen kit for scuba diving.

I'll PM you my address and send you back a check for shipping.

thanks kindly Jennifer
__________________
_________________
Jennifer

If I defend myself I am attacked.

My meaningless thoughts are showing me a meaningless world.

My attack thoughts are attacking my invulnerability.

I'd like to think of something smart, but I don't want to hurt myself.

My google+ page

DoALL 36"
Another Johnson model J Project
Lathe? Maybe..... 1958 SBL 13"
Yeti Esseti Aka running welder on 3phase.
Reply With Quote
  #6  
Old 01-26-2012, 08:20 PM
monckywrench's Avatar
monckywrench monckywrench is offline
trust but verify
 
Join Date: Feb 2007
Location: Elsewhere
Posts: 4,320
Default

Who sold the rebuild kits? Now I know parts exist I may score a couple.

Feel free to post kit part numbers etc!
Reply With Quote
  #7  
Old 01-26-2012, 08:42 PM
USMCPOP's Avatar
USMCPOP USMCPOP is offline
Gold Star Dad
 
Join Date: Jul 2006
Location: Richmond, VA area
Posts: 11,911
Default

The Union Carbide "The Oxy-Acetylene Handbook" is one of my bedside readers (second edition, 1960). When they talk about "blowpipes", I have flashbacks to Tarzan movies and stuff.
__________________
USMCPOP
Reply With Quote
  #8  
Old 01-27-2012, 09:37 AM
monckywrench's Avatar
monckywrench monckywrench is offline
trust but verify
 
Join Date: Feb 2007
Location: Elsewhere
Posts: 4,320
Default

Great book and recommended reading even for casual welders.

This one's on Ebay (not mine) for five bucks and shipping. Worth it for the torch porn alone!
Amazing how many of the them are still in production.
Attached Thumbnails
Click image for larger version

Name:	book.JPG
Views:	120
Size:	29.8 KB
ID:	86713  
Reply With Quote
  #9  
Old 01-27-2012, 11:41 AM
USMCPOP's Avatar
USMCPOP USMCPOP is offline
Gold Star Dad
 
Join Date: Jul 2006
Location: Richmond, VA area
Posts: 11,911
Default

There are sellers at Abe Books listing the book from $3-$5, shipping included.
__________________
USMCPOP
Reply With Quote
  #10  
Old 01-27-2012, 12:06 PM
allessence's Avatar
allessence allessence is offline
Gadget Girl
 
Join Date: Jul 2009
Location: MA, 01543
Posts: 6,426
Default

Quote:
Originally Posted by monckywrench View Post
Who sold the rebuild kits? Now I know parts exist I may score a couple.

Feel free to post kit part numbers etc!
ESAB still sells this regulator. Or I should say the modern version.
New are very very expensive.

http://products.esabna.com/EN/home/g...eter_r502fm580

When I had received my first 2 stage one I contacted ESAB and they were kind enough to dig up the old manuals and faxed me a copy. There are actually 2 manuals plus other info..

the regulator was manufactured by Linde then sold as Union carbide, Linde and now ESAB.. Nice thing is it's been in production since like 1960 or something.

and in the 70's they raised the pressure from 20psi to 50psi. The raised the pressure to better cope with CO2 use.

Some would say this pressure is to high for good gas savings and that the 20psi version offers better shielding gas savings.

If one wanted to they could lower the pressure and calculate the flow rate for the given reading on the flow meter. My base model with stock spring screwed all the way out was right around 35psi.. So a lighter spring would offer lower pressure.

Anyhow, ESAB still has all the parts other than the ones they don't use for the current model, like the end caps.

These regulators on Ebay can be down right cheap. I just bout the 2 that really look like brand new for 51.00 and delivered for 64.80..

The rebuild parts are about another 20.00 for for the amount of money one can't go wrong.


Parts you have to order from an ESAB distributor.. in my case Airgas east.

Parts:

top gasket 77Z69 suggested retail 7.80 (2)

Oring 85W43 1.58 (2)

Diaphragm 30z58 3.19 (2)

1st stage spring 29Z54 5.34 (1)

2nd " " 29Z02 4.67 (1)

Filter inlet 71Z33 4.98 (1)

HP/LP seat 32Z60 0.09 (2)

Bottom cap 1st stage 71Z33 NLA


If you have the single unit (5007-5008 models) then you won't need the springs. Only if you are converting the single stage unit's to 2 stage do you need the new springs and a new 1st stage bottom cap. I haven't figured out the difference yet other then the 2nd stage unit has a screw for adjustment of pressure and the 1st stage does not.

Quote:
Originally Posted by USMCPOP View Post
The Union Carbide "The Oxy-Acetylene Handbook" is one of my bedside readers (second edition, 1960). When they talk about "blowpipes", I have flashbacks to Tarzan movies and stuff.
Takes a true master to use a blowpipe. I've tried it but with little success. .

Quote:
Originally Posted by monckywrench View Post
Great book and recommended reading even for casual welders.

This one's on Ebay (not mine) for five bucks and shipping. Worth it for the torch porn alone!
Amazing how many of the them are still in production.
Seems like most of the welding books I've seen use vintage info. Even the book that came with Dyna was written years ago and didn't really have any new info for the inverter machine.

The Miller Student welder package is a great resource.

http://www.millerwelds.com/resources/tools/#training

Okay current price is 70.00.. When I bought mine 3 years ago it was 40.00 delivered.
Attached Thumbnails
Click image for larger version

Name:	4548_1121084806.jpg
Views:	105
Size:	36.3 KB
ID:	86715  
__________________
_________________
Jennifer

If I defend myself I am attacked.

My meaningless thoughts are showing me a meaningless world.

My attack thoughts are attacking my invulnerability.

I'd like to think of something smart, but I don't want to hurt myself.

My google+ page

DoALL 36"
Another Johnson model J Project
Lathe? Maybe..... 1958 SBL 13"
Yeti Esseti Aka running welder on 3phase.

Last edited by allessence; 01-27-2012 at 01:45 PM.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 01:41 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.