Issues with gas torch

[PHILK]

looks like i will have to get a Sievert
Thanks to all

 

[Alantoo]

Show me it working when connected to a 37 mbar regulator and I'll be impressed.

Your wish is my command...prepare to be impressed...

When connected to a fixed 37mbar regulator the torches still light and burn, except for the micro pin-point torch. The smallest one below shown is the one I used for jewellery and for annealing cartridge cases which I take to be equivalent jet size and power to the OP's torch.




So I still think the OP should have been able to get his torch to light whatever regulator he had...but I acknowledge I have made assumptions about his particular torch.

However, I do concede the (decimal) point literally...37mbar = 0.037bar you're quite correct.

In the earlier photos the gauge was reading below 0.4 bar. I see 0.34 0.38 and 0.39 on the images...but when I just had a look at it off the cylinder, the needle does not return to zero by 0.25bar, so I guess it was producing a fair bit less than it was reading.

Alan

Furthermore, even with a big installation like yours, if the gas offtake is such that the cylinders chill until frost forms at the liquid level, then the gas pressure coming out cannot be more than say 4 bar.

Yes, the furnaces are simple gas air mix burners of my own design and manufacture controlled by a slide valve for the air supply, and simple needle valves for the gas to produce the required carburising or oxidising atmosphere in the chamber. You just adjust it like an oxy/acetylene torch. Providing you have sufficient pressure to get enough gas and air in the furnace chamber you get the temperature needed.

Alan