Tank Explosion….
I grabbed this off the Yellow Forum.
This is frightening….and extremely graphic.
https://www.facebook.com/photo.php?fbid=1518230888463568&set=pcb.923886187623549&type=1&relevant_count=1
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I normally do refills up to 2800 PSI any way…it helps preserve my SCUBA tank supply and does not impart more than designed for stress PSI.
good? bad? … :confusedn: :geekn:
Just a fwiw, I spoke with the owner of Air Hog back when I ordered my tank from them on the subject of burst strength. Their maker tests at regular intervals during production. Burst happens in the 19,000 + psi range and isn’t that dramatic.
when you see how thick the walls are you wont worry anymore ha,, thicker than the wall on my rapid block where bottle holder nut screws in and valve area too, will measure wall thickness with vernier when ive chopped it up. 😆
Yes please do show us the AIRFORCEAIRGUN tank I have been concerned over this I have seen on line a firefighters tank blew up it was between both parked fire trucks they were damaged but looked repairable. If I remember tank was very old and blew up because it had been exposed to some chemicals ? Thanks We need our AIRFORCEAIRGUNS since regular guns might soon be banned the way things are going
Well pretty much the max you can go is 4500 with a carbon tank..maybe. I understand that most PCP res’s are rated above that by 1/3 and typically in the long direction which puts stress on the threads. Seems like a bad decision on the tank type and fill pressure.
There’s a good article in Wikipedia on this topic. The usual test is to 5/3 working pressure while measuring cylinder volume. If the volume doesn’t return to normal when the pressure is released, the tank is removed from service.
Luxfer advertises a minimum burst pressure of 2.5x working pressure for it’s cylinders. Don’t know about AF cylinders, sourced from Catalina Cylinders, if I remember…
-x356b
Thanks, I’ll check it out
i havnt heard of anyone over filling there bottles past operating pressure,, would be a foolish thing indeed, i posted pic up so people could put there minds at rest knowing it would take a lifetime before these bottles could corrode enough to burst the bottle,,
my rapid 7 block is same thickness when valve body is removed and you look inside the wall is only the same thickness as bottle and same pressure as bottle, and is the same t6 alloy, so its like saying if you have a early mk1 rapid 7 bin it as it wont be safe,,scaremongering to the highest degree,,
if your paranoid its simply a case of removing bottle top and shining a maglight in and making sure its still shinny without any corrosion or staining,, thats why nobody in the last 20 years or so has not had a buddy bottle explode on them, also they would need to be tested like scuba bottles if this was an issue,,
never bought a pcp and read in the manual that buddy bottle has to be replaced every 10 years or whatever,,and ive bought a LOT of pcp,s ha,, been shooting pcp,s since th 90,s 🙂
Air tanks are like tires they have a serviciable life span , when it’s time to replace them , you replace them period . You do not over inflate them to
see how far you can push their max limit . I think that is why so many air gunners are having all the problems with their PCP airguns is because they
expect more out of their gun than it was really designed for . I’m not saying that you can not make mods to your gun to help improve its’ performance
but really pushing too far like trying to make a Great Dane out of a Poodle ? Do you really expect that kind of improvement ? If you want the max super
airgun from the get go why don’t you , if you don’t have the abilities to make it yourself find a person or company to make it for you ? Why spend so
much money trying to do it yourself and still be unhappy with your gun . I have a Talon SS that was first a .22 cal with a 12″ barrel , had Tony’s Slap
hammer mod and 9″ LDC puy on it .After one year up-graded to Tony’s 12″ .25 barrel . Also when I first ordered my Talon SS from R&L Airgun Supply I
had the Maddog Ultima stock put on it . Since then no other mods or changes and my Talon SS is still more than just a tack driver , it shoots and makes
kills at the will of the shooter and I have never had any problems in its performance at all . I have never messed with valve , stem , tank , or o-rings .
I let this gun do what it was designed to do with-out trying to push it further than its’ designed to perform at , perhaps if one leaves things the way
they where designed to be they wouldn’t have so many problems with them ? Well that’s my thoughts about it .
FROM : THE BIRDMAN
Viper,
There’s a good article in Wikipedia on this topic. The usual test is to 5/3 working pressure while measuring cylinder volume. If the volume doesn’t return to normal when the pressure is released, the tank is removed from service.
Luxfer advertises a minimum burst pressure of 2.5x working pressure for it’s cylinders. Don’t know about AF cylinders, sourced from Catalina Cylinders, if I remember…
-x356b
Can anyone tell me what the actual burst pressure of an AF tank is? I’m certain that theres been extensive testing done, maybe post a link as to how the D.O.T performs their tests and comes up with their ratings. Thanks guys
just an additional note concerning wall thickness, measurements are 5.70mm or 0.2240 imp, 😀
no probs tony, glad i could be of use, have gained much wisdom from this site in the past 6 years and i dont post often as theres not much i can add to what you guys over there already know,
but i do check almost daily for new stories,,, as im heavily addicted to pcp!!! 😀
That is incredible…
Thank you for a very valuable post.
I will make this a sticky.
Tony
That’s some massive wall…
Thanks for sharing, this pic should be included with the airforce manual and publicity…
here you go,, didnt slice all the way up as slitting saw was totaly blunt,, used an end mill and it took forever ha, forgot to measure it,, will get the vernier out tomorow and report back with egsact wall measurement,, 😀
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I fill my pcp to 2500psi max only.