Measuring A Thread.

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Material compatibility

Oxygen vigorously supports combustion of many materials, which will not normally burn in air

Copper, brass and high quality stainless steel are the most commonly used metals and are compatible with oxygen. However most lubricants are not compatible; oil and grease can ignite spontaneously burning with explosive violence and should not be used with oxygen

Oxygen must never be used with Polytetraflouroethylene (PTFE) tape, as it will cause combustion

Standard PTFE tape contains oil; oxygen reacts violently with oil and may spontaneously burn with an explosive force. BOC does not recommend the use of PTFE or other thread sealing components in conjunction with any gas cylinder valves or regulators

......just saying

Taken from BOCs site

 
SILICONE! whoa there.... Silicone + Oxygen = kerferkingboom!

Just preventing Armageddon

Note that these two are only good too 30 bar

I know that your delivery pressure will be no where near this BUT the HP side of the first stage of the pressure reducer will be SO only use it on the LP side

We need oxygen to live....but it can have a very nasty habit of killing you in the process!

Helium!.... Now there IS a gas ........

Just squeaking

 
Shall I just duck out of this thread? Spent all me life in engineering, I know what a 1/4"bsp thread looks like by sight. Jeez, some folks will never be told or learn!

I think you'll find I mentioned Zeus at least half a page up from onoff, but you can thank him for duplicating my post. No prob. Now what you really need is a 3/8"bsf and a good pair of stilsons. Force the bugger in. Whatever you do don't listen to peeps who know what they're talking about. That way leads to failure.

 
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I have to say. It pishes me off when folks belittle sparks and it totally pishes me off after a life in engineering cos the new gaffer has a college degree, but aint a clue what he's on about. He is the clever *****, I do as he says, I get loads of overtime. Why should I do his job?

 
I have to say. It pishes me off when folks belittle sparks and it totally pishes me off after a life in engineering cos the new gaffer has a college degree, but aint a clue what he's on about. He is the clever *****, I do as he says, I get loads of overtime. Why should I do his job?
Exactly!

Smile inwardly and take the money, let him carry the can

 
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