regulator questions

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ronaldj

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does anyone know if victor makes the sgt500 anymore? Also, anyone familiar with harris hp742?
 
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ronaldj

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Do you know of a web site that sells them? I can't find sgt500 no matter where I look. Thanks
 

Matt F.

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Left C;80659 said:

I contacted the seller for some pics. Those look pretty beat up. nothing like you or I have. I don't think the price they are asking is fair for that condition.
That said, Victor still makes the SGT500. It's not going anywhere...constantly being improved upon.
You'd have to special order it through Victor or one of their distributors. It's a specialty item that is made in a clean room, etc.
You can get them for about $900-1200 range depending on how you want them to be configured. I have a person who can order them directly from victor, so let me know if you are serious about getting one.

Another option is to wait and check ebay often. I got a brand new SGT500 for $225 off ebay. Not a scratch on the thing. They are RARE, but they do pop up occasionally. Also check for BOC's version (model number: BST500).
 
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ronaldj

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one other question. If I have a choice, what do I opt for with respect to delivery psig, and inlet and outlet designations?
 

Matt F.

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The ports on an SGT/HPT500 are 1/4" NPT. Depending on the unit, you may get any kind of CGA configuration (usually corrosive/toxic/medical gasses). For this reason, you have to do a bit of research. If the SGT has seen toxic/poison gas use, I would stay away from buying it. Victor techs can't work on these regulators b/c it causes a health risk. If your SGT fails, instead of repairing them, they send you a replacement under warranty.

That said, if you find one in good shape and not used with a toxic gas, you will have to remove the CGA and post body NPT components. You have to do this carefully. If you damage the threads on a stainless regulator, it's an expensive piece of trash. NO WAY TO REPAIR. On the other hand, you can repair a brass or chrome plated brass regulator such as the HPT500.

If you want a more cost effective and repairable regulator, you could invest in an HPT500. Order this unit with a CGA 320 and no post body. It will come with a nice little blue plastic plug in the outlet port. The HPT500 is the same regulator as an SGT500, except in chrome plated brass.

Same internals (stainless steel diaphrams, etc.).

Getting back to the SGT500, you will need to use teflon tape on all regulator ports to prevent damage to the threads when you install the CGA, post body.

Hope this helps.
 
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ronaldj

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You've given me some things to think about Matt. It will certainly get me into the dual stage regulator club for a fraction of the cost. It may be the way to go for my first one. Can all the output fittings still be stainless?
 

Matt F.

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ronaldj;80725 said:
You've given me some things to think about Matt. It will certainly get me into the dual stage regulator club for a fraction of the cost. It may be the way to go for my first one. Can all the output fittings still be stainless?

If you want to save even more money, you can go with a Victor VTS235A-1993 (lab/hospital grade)--the chrome plated version of the VTS253B-320 (industrial grade). This is a fraction of the cost of the HPT500. I've owned a couple of these units and built several more. It's a solid American-made regulator from Victor.

http://www.scientificvisions.com/ca...ducts_id=52&osCsid=3lbrqre0j7338oe8a7u48fqu35
 

Matt F.

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One thing I need to clarify:

The VTS253A-1993 (0-30 psi low pressure gauge) will not work well with the atomizer-type diffusers, which require 30+ PSI craking pressure. I do not like or use the atomizer-type diuffusers, so it isn't an issue for me. If you are hellbent on using an atomizer-type diffuser, you will need a "B" range regulator (0-60psi low pressure/working pressure gauge) or higher (B, C, D range).
 

maknwar

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I can get victor sgt500's. They list for $889. I can get them cheaper than that. , but they are still expensive.
 

Matt F.

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maknwar;81410 said:
I can get victor sgt500's. They list for $889. I can get them cheaper than that. , but they are still expensive.

Is that including tax and shipping? I'll have to see what my source can do. FWIW, you can go to any victor dealer (airgas, welding shops, etc.) and order directly from the source. You just need the part numbers, which are listed on the regulator (e.g. SGT500-125-320-DK, etc.).
You can also order them without CGA and post body components, which might save money. Still it's going to be about a grand when things are said and done.
 

maknwar

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Yes, that's total. That's even with a few dollars in my pocket. I think that's with a cga 320 inlet too.
 

Left C

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Dang .... I paid $90 each for two SGT500's including shipping with chrome CGA-320's and Swagelok stainless steel 1/4" x 1/8" fittings. Inflation sucks! :D
 

Matt F.

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Left C;81424 said:
Dang .... I paid $90 each for two SGT500's including shipping with chrome CGA-320's and Swagelok stainless steel 1/4" x 1/8" fittings. Inflation sucks! :D

You should have bought them all at that price, buddy! :p