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-   -   Hot torch knobs (http://talk.craftweb.com/showthread.php?t=12612)

Franklin Sankar 06-17-2020 06:40 PM

Hot torch knobs
 
1 Attachment(s)
Is it ok if my torch knob get warm.
Hope it does not explode
Franklin

Franklin Sankar 06-17-2020 06:45 PM

Sorry, not only the knobs but the body of the torch. Also the knobs are really levers. An oLd torch used for scientific framework.
Thanks
Franklin

Tom Fuhrman 06-18-2020 09:27 AM

that torch may have been designed for natural gas and not propane so it may be running hotter than it was designed to run. you may have to see if you can change the orifice.

Franklin Sankar 06-18-2020 10:25 AM

Can I run it like that . Would it be dangerous.
Franklin

Franklin Sankar 06-18-2020 10:31 AM

Running it out of spec is not recommended but glassblowerís work on the edge so I am not worried
Franklin

Franklin Sankar 06-18-2020 10:37 AM

Tom the older you get the wiser you get. It may be nat gas. You are right.
Itís a beautiful torch. No nat gas here.
Franklin

Larry Cazes 06-18-2020 11:37 AM

Quote:

Originally Posted by Franklin Sankar (Post 148027)
Running it out of spec is not recommended but glassblowerís work on the edge so I am not worried
Franklin

Of course it depends on how hot but in general it is NOT a good idea.

Eben Horton 06-19-2020 02:12 PM

Franklin. Is there combustion happening inside your torch?? That is a no-no.

Franklin Sankar 06-19-2020 02:30 PM

I donít know how to tell. Let me try to get a temperature read hon the body.
Itís a nice torch but I believe itís obsolete. It was owned by the last scientific glassblower on the island .
I am trying to track him down but so far no luck. He retired.
Franklin

Franklin Sankar 06-19-2020 02:39 PM

If the torch is rated at 10 psi and I put in 15 psi oxygen. Only 5 more.
Is my goose cooked. Will I get plastered to the wall of my studio?
Ok ok still under quarantine.
Canít find how to reduce pressure . Regalia 10 sequal. 10 l. The word processor keep changing sequal to sexual.
Franklin

Larry Cazes 06-19-2020 03:57 PM

Quote:

Originally Posted by Eben Horton (Post 148039)
Franklin. Is there combustion happening inside your torch?? That is a no-no.

Yes pre ignition is not your friend.

Tom Fuhrman 06-19-2020 05:02 PM

you might try using compressed air instead of straight oxygen and it may burn cooler.

Shawn Everette 06-19-2020 08:10 PM

If hes's not getting flashback or some really odd flame I don't think he's getting burn in the unit.

I doubt you'll do much damage to a torch with an extra 5 psi at those pressures, might end up blowing out the flame more often or give you trouble dialing things in. You could probably use an oil less valve to try and curb the pressure if it's giving you issues. Or just kink the line. Most oxycons I've used have an integral regulator of some kind.

Franklin Sankar 06-20-2020 03:30 PM

Thanks For the replies. It is working well no blow out, popping etc. I was looking for A pressure regulator. Will look again. I suspect the knob on the torch will reduce the flow not the pressure. I also have a valve on the oxygen line.
My glass gets brown so I need all the oxygen I can get.
Franklin

Franklin Sankar 06-21-2020 06:11 PM

1 Attachment(s)
Ok so here is the temperature I got using a ir gun or whatever they call it to measure . Sorry about the rotation
Franklin

Larry Cazes 06-22-2020 06:50 PM

Thats just too hot for my comfort. I would not run that torch until you correct this. On my GTT Mirage, which is a much larger torch, I can touch the end of the barrel comfortably at ALL times.

Pete VanderLaan 06-23-2020 07:31 AM

This condition is always a lack of velocity in mixing tubes for glass furnaces. We unintentionally built some real bombs during the color class and when I looked at what I had built, I felt like a real idiot.

Franklin Sankar 06-23-2020 01:59 PM

How about if I put a heat sink on the barrel?
Franklin

Shawn Everette 06-23-2020 02:47 PM

Heat sink won't help if there is combustion in the barrel, you're just covering the symptoms. Got any pic of the unit, especially in use? That might tell a lot.

Franklin Sankar 06-23-2020 04:00 PM

1 Attachment(s)
First pic , Center fire. Next outer ring. Center and outer ring canít be on at same time.
Franklin

Franklin Sankar 06-23-2020 04:01 PM

2 Attachment(s)
More pictures

Sky Campbell 06-23-2020 10:53 PM

Iím familiar with that burner Franklin. Fisher scientific may not be the manufacture but they sold them for many years. The paddle valves are connected to Teflon shafts with orings. I wouldnít worry about the Teflon but if you over heat the orings it will leak from the handles. I have one taken apart in a drawer somewhere. Funky little bench burners that never gained much popularity. The Carlisle cc was the standard at the time.

Shawn Everette 06-24-2020 09:32 AM

I'd say you're centerfire looks good, but your outer might be too large too close to the torch face. Hard to say for certain with that much photo blowout. Is it getting hot when only the center is used?

Franklin Sankar 06-24-2020 11:30 AM

Good question. With center fire Itís 130 F near the tip 112 lower down.
Sky It roars Like a lion when I give it the full pressure. I Hate to do this but I use a bleed valve To reduce the pressure. Can you remember the operating pressure?
Still looking for the pressure regulator in the concentrator.
Franklin

Shawn Everette 06-24-2020 12:47 PM

On a lot of the ones around here it's a small valve on the exterior with a gravity ball showing "pressure", like the ones used for metering shield gas for welding.


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