gas mixing regulators

Date 06-05-2008 22:07

How expensive would a 2 or 3 gas mixing regulator be, and where would I find one?
I'm looking to get a GMAW welder sometime soon and instead of buying another tank for c25 or whatever other mix id want, I'd rather mix it myself. I already have a 100% Co2, 100% O2, and 100% Ar bottle, if I got a bottle of helium id be all set.

Any input would be grand,
-Clif

By sbcmweb (****)

Date 06-05-2008 23:21

Try ebay. Seen a few mixers on there a while back. Good luck! S.W.

By DaveBoyer (*****)

Date 06-06-2008 02:04

Some of the ones You saw are in My shop now. They are an ingenously simple and nicely made piece of gear. I had to work on 1 of them, and should do a little work on another, but the *#$%*(*^&%$@#%^**( knobs won't come off, and You need to remove them to get it apart.

By sbcmweb (****)

Date 06-06-2008 02:15

Cool! Glad you got 'em. S.W.

"You're hobbled now, it's your own fault" (Anne Wilkes to Paul Sheldon after cutting his foot off, Misery, Stephen King)

By DaveBoyer (*****)

Date 06-06-2008 02:08

Clif, have a look at Ed Craig's website - weldreality.com - He doesn't see any reason to use O2 in a gas mixture. He is also not too keen on 3 gas mixtures.

By Plasma-Brain (**)

Date 06-07-2008 16:39

When I get a few minutes ill check it out, I've glanced at his site before but didn't get a chance to read into it too much.
I'm probably going to have the machinist at the air museum carve me out a "T" with 3 fittings on it and just hook my regulators up to it... put a sintered screen before the outlet to make sure the gases mix and I'll be all set :)
-Clif

By DaveBoyer (*****)

Date 06-09-2008 02:53

Clif, I paid 100-150 for older Smith 2 gas mixers, and got a real nice newer stainless housing one with the 2 preset regulators and 3 lengths of green hose with inert arc fitings for 300. Combining the output from multiple flowmeters might be problematic when You only want a few % of one of the gases, just My opinion. Check eBay store "yours4les"