The reg on my 7 thread DIN tanks seems MUCH harder to put on than the 5 thread PST DIN tank I have. I will try some vinegar/water on the threads but I can slap on some silicon grease to make putting on the threads easier or will I get some air poisoning or something? I'm missing the easy yoke screw on. This DIN seems to take forever to put on. Thanks for the input.
Greasing up DIN threads?
- Thread starter bober99
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Silicon isn't O2 compatible. A thorough cleaning has always been the answer for me when dealing with threaded things that have become hard to turn. Try Simple Green and a toothbrush.
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bober99:
Depends on how you're using the cylinder. As Jonnythan said, silicone grease isn't O2 compatible ... because it's a petroleum-based product. So if you're using the cylinder for Nitrox ... and the fill station uses partial pressure blending or otherwise exposes your cylinder to nitrox mixes greater than 40% ... you will not want to use silicone grease. There's an O2 compatible lubricant known as Crystolube that you can use in that case.
On the other hand, if all you're using is air ... or premixed nitrox of 40% or less ... then silicone grease is acceptable.
I'd still be careful about using it though ... the stuff collects sand and grit like a magnet. Best idea is to wash it out with Simple Green or a solution of 1 part white vinegar and 3 parts water ... using a toothbrush. Then rinse thoroughly with fresh water.
... Bob (Grateful Diver)
Spectre
Contributor
jonnythan:
How much gas contacts the threads of your valve anyway?
it may be your valve just needs to be cleaned. I've had a few sticky ones lately that are in dire need of getting broken down and cleaned; last one needed a good brass brush scraping to get my reg on.
Cleaning?? Yeah, I do that once a year or so....
Meanwhile, a little dab of crysto-lube on the reg's DIN threads makes assembly much easier.... (yeah, yeah - c-lube is probably a bit paranoid, but I do PP blend).
Meanwhile, a little dab of crysto-lube on the reg's DIN threads makes assembly much easier.... (yeah, yeah - c-lube is probably a bit paranoid, but I do PP blend).
Spectre
Contributor
I use crysto-lube for everything; yes... but that's because we've got a about a 1/2 gallon of the stuff.
But using crystolube for those threads is completely useless as no gas touches them.
But using crystolube for those threads is completely useless as no gas touches them.
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