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Gas pressure reduction valves advise


#1

I’ve been using pressure reduction valves for very many years on
both oxygen and propane bottles to provide a line pressure of around
5 pounds per square inch. Before I began jewellery work I did quite a
good deal of scientific-equipment type glassblowing using Pyrex (soda
-or ordinary glass doesn’t really need oxygen) and always found these
pressures perfectly satisfactory, even when very large flames are
required. (making large flasks from tube, for instance) But I have to
emphasize that you ** MUST** use pressure reduction valves, and one
should also have anti-flashback devices too, to be really safe.

John


#2
But I have to emphasize that you ** MUST** use pressure reduction
valves, and one should also have anti-flashback devices too, to be
really safe. 

If you use O2 then a flash back is advised, but for straight propane
it isn’t necessary, as long as you check the hoses and connections
regularly (but you must check).

Regards Charles A.


#3
But I have to emphasize that you ** MUST** use pressure reduction
valves, and one should also have anti-flashback devices too, to be
really safe. 

Hi John, Why not use a regulator rather than a pressure reduction
valve? Or are you referring to a regulator? I prefer an adjustable
valve, then you can change your pressure as needed. I’m not picking
at you, just trying to understand whether you are using a preset
pressure reduction valve or an adjustable regulator as I am
accustomed to seeing. I certainly agree with the need for flashback
arrestors!

Mark