Jump to content


Photo

4500 in a 3000 tank!?


  • Please log in to reply
19 replies to this topic

#1 p_aint_ball

p_aint_ball

    Sophomore Member

  • Members
  • PipPipPip
  • 493 posts

Posted 17 January 2009 - 01:30 AM

uh... i have an old nitro duck tuff skins tank... i thought it was 3000 psi, but they filled it up to 4500... will it blow up? i think it looks like the tank is bending outward a little, but i might just be supper paranoid... anyone know what the psi on a nitro duck tuff skins tank is? theres only one site that sells it but its from a long time ago when they suposedly costs $230 and i dont trust that
Proto 07, UL barrel .692 14", Halo B v35, Warrior speed feed, Ndz roller trigger, guerilla air 46/45 myth tank

#2 MattyK_P8b

MattyK_P8b

    Senior Member

  • Members
  • PipPipPipPipPip
  • 1,246 posts
  • Gender:Male

Posted 17 January 2009 - 02:16 AM

It could very well be a 3000psi tank. Is it a steely? It doesn't say what it is on it?

It wouldn't blow up just rupture and act like a rocket...generally speaking they say 3000psi on them but that doesn't mean that anything over will kill the tank. There is a bit of buffer....I don't know if 1500psi is within that buffer so If I were you Id get that air out as fast as possible before something bad happens. Also if the tank is indeed bowed out then that tank is toast...
<div align='center'>
</div>
<div align='center'><img src="http://i39.tinypic.c...om/2w4kvpw.jpg" border="0" class="linked-sig-image" /></div>

#3 REMER

REMER

    Sophomore Member

  • Members
  • PipPipPip
  • 355 posts
  • Gender:Male
  • Location:garden city Mi

Posted 17 January 2009 - 02:26 AM

if i remember correctly (which probly means i dont) i belive the bottom of a steely bowed out a lil
if i am wrong someone please tell me i am wrong

but in a worst case senerio the tank will blow on you but unless you have really bad luck you should be good the burst disk will pop if it is to high i saw one blow today actually cause they werent paying attention to how much aire they were putting in a 68/45

#4 Promaster928

Promaster928

    Member

  • Members
  • PipPip
  • 233 posts
  • Gender:Male
  • Location:Newport News, Va

Posted 17 January 2009 - 02:44 AM

my local dive shop fills my 48/3000 to just under 4k on the gage. I asked them why and they say when it cools it'll drop( the tank is realy warm just after they fill it ), It does drop some but it's still over 3500 psi.

I was told in hydro testing they put 3000 psi tanks all the way up to 6k psi to test the integrity.

Edited by Promaster928, 17 January 2009 - 02:45 AM.


#5 Maj Tom

Maj Tom

    Master Member

  • Members
  • PipPipPipPipPipPip
  • 2,659 posts
  • Gender:Male
  • Location:Davisburg, MI

Posted 17 January 2009 - 06:37 AM

If your that paranoid about it remove the line (or reg if you cant get the line off easily) from the marker. Screw the tank in and bleed it out until it's 3k.

#6 benjy85pb

benjy85pb

    It's for the greater good.

  • Members
  • PipPipPip
  • 620 posts
  • Gender:Male
  • Location:Great Britain

Posted 17 January 2009 - 08:43 AM

If your that paranoid about it remove the line (or reg if you cant get the line off easily) from the marker. Screw the tank in and bleed it out until it's 3k.


Most definitely! It's better to be safe then sorry, get it down to 3000psi or less and then worry aobut finding out about what it's actual maximum PSI rating is. Compressed air is not something you want to mess around with and dwell upon if you have your doubts, it's always, always better safe then sorry.
I'LL BELIEVE IN GOD WHEN HE/SHE PHYSICALLY SLAPS ME ACROSS THE FACE!

#7 CRU_Paintball

CRU_Paintball

    Senior Member

  • Members
  • PipPipPipPipPip
  • 2,049 posts

Posted 17 January 2009 - 09:20 AM

First the tank should not "bow" to the point where you can notice it. It will however expand but you still shouldn't even notice that much. The burst disk on 3000 psi tanks is 5000 psi I believe. There should be a series of numbers on the side of the tank. It will probably be right next to the dot # on my tank it reads like this DOT-E 10945-4500 so my tank is a 4500 psi tank. It should look something like this
Posted Image
but definately bleed the tank down to 3000 psit before doing anything else.

#8 laburton

laburton

    Full Time Helper

  • Members
  • PipPipPipPipPip
  • 2,312 posts
  • Gender:Male
  • Location:Ajax Ontario

Posted 17 January 2009 - 09:37 AM

I would have reason to beleive that the Nitro Duck Tuff Skins are 4500 psi. So i dont think that you would have to worry. But because it is an "old" one, im not sure but if I were you i would go to your shop and ask them what to do. For now, keep the tank in a safe enviroment away from warm temperatures.Bleed it if you can.

LB

Edited by laburton, 17 January 2009 - 09:45 AM.

Posted Image
---------------------------------------------------- If I Have Helped you At All During Your Stay at The TechPB Hotel Click Here
IF YOUR UNDER 18 AND PAY FOR YOUR OWN STUFF PUT THIS IN YOUR SIGNATURE

#9 brycelarson

brycelarson

    Show me the Data!

  • Moderator
  • PipPipPipPipPipPipPipPip
  • 8,588 posts
  • Gender:Male


Posted 17 January 2009 - 09:43 AM

Bleed it now. yes, 3k tanks can hold more than 3k - but it's not safe. Theoretically the burst disk will let go first - but are you willing to bet your arms on that?

#10 skillet72

skillet72

    Member

  • Members
  • PipPip
  • 62 posts

Posted 17 January 2009 - 10:02 AM

Thank you CRU for the pictures.

Lets clarify some thing about air tanks here.

All tanks in the USA should have the DOT number on them with the WORKING pressure of the tank next to that number. If there is no DOT number then do not use the tank.That number will be on the shoulder of all Aluminum tanks and on the label on all fiber wrapped tanks.

An example for Aluminum tanks; DOT-3AL-3000
An example for Fiber wrapped tanks; DOT SP 14003-4500

As stated before the 3000 and 4500 is the pressure that the tank should be filled to. The tank should not be filled above this.

Now if a tank is over filled this will not automatically explode or cause damage but should be drained down to the correct pressure as soon as possible.

All tanks that have DOT markings are tested to 5/3 working pressure. This means that all 3000 tanks are tested at 5000 and the 4500 tanks are tested at 7500. This is the pressure that is put into the tank during hydro testing.

Now if you overfill the tank repeatedly this will weaken the tank and create a hazardous situation and will not let the tank pass hydro when it is time. You will usually not be able to notice any expansion of the tank or notice any difference in the tank, but this still a dangerous thing to do. If you do notice something have your tank inspected by a hydro tester.

If you do overfill the tank by more then 10% then you should have the tank hydro tested to be safe.

About burst disks
DOT regulations states that all tanks will have a burst disk rated at 5/3 working pressure. This works out to be;
CO2 1800 working pressure = 3000 (3k) burst disk
HPA 3000 working pressure = 5000 (5k) burst disk
HPA 4500 working pressure = 7500 (7.5k) burst disk

All burst disks should be made to blow (vent) at the rated pressure -10%.

3000 will burst at 2700-3000
5000 will burst at 4500-5000
7500 will burst at 6750-7500

This means that if you over fill a tank there is a chance that the burst disk will vent but not always.

Now for those that do not know me i work for Ninja Paintball and manufacturer regulators and burst disks. We are also a DOT certified hydrostatic re-tester with a RIN # G777.

#11 p_aint_ball

p_aint_ball

    Sophomore Member

  • Members
  • PipPipPip
  • 493 posts

Posted 17 January 2009 - 11:07 AM

First the tank should not "bow" to the point where you can notice it. It will however expand but you still shouldn't even notice that much. The burst disk on 3000 psi tanks is 5000 psi I believe. There should be a series of numbers on the side of the tank. It will probably be right next to the dot # on my tank it reads like this DOT-E 10945-4500 so my tank is a 4500 psi tank. It should look something like this
Posted Image
but definately bleed the tank down to 3000 psit before doing anything else.


ok i checked it and it IS in fact a 4500 tank... lesson we should all learn from this: dont buy used stuff off pbnation from guys who have no idea what they are doing
Proto 07, UL barrel .692 14", Halo B v35, Warrior speed feed, Ndz roller trigger, guerilla air 46/45 myth tank

#12 laburton

laburton

    Full Time Helper

  • Members
  • PipPipPipPipPip
  • 2,312 posts
  • Gender:Male
  • Location:Ajax Ontario

Posted 17 January 2009 - 11:10 AM

Glad the TechPB community can help :)

LB
Posted Image
---------------------------------------------------- If I Have Helped you At All During Your Stay at The TechPB Hotel Click Here
IF YOUR UNDER 18 AND PAY FOR YOUR OWN STUFF PUT THIS IN YOUR SIGNATURE

#13 CRU_Paintball

CRU_Paintball

    Senior Member

  • Members
  • PipPipPipPipPip
  • 2,049 posts

Posted 17 January 2009 - 11:18 AM

I'm glad that picture helped you out if you need anything else pm me and I'll try to help you out.

#14 tweetyarmy

tweetyarmy

    UKS

  • Members
  • PipPipPipPipPip
  • 2,206 posts
  • Gender:Male
  • Location:918

Posted 17 January 2009 - 12:21 PM

here you go
and if it was filled up to 4500 and it was a 3000 the safty features will release all the air

Jolly Green splatterpb podiumpaintball
fat front player/agg/elite gun owner
Members Of The Owl Council
TWEETY

#15 CRU_Paintball

CRU_Paintball

    Senior Member

  • Members
  • PipPipPipPipPip
  • 2,049 posts

Posted 17 January 2009 - 12:34 PM

The safety features (I'm assuiming youre talking about the burst disks, correct me if I'm worng) will not burst until 5000 PSI on a 3000 PSI regulator. Now if somehow someone put a 4500 PSI regulator on a 3000 PSI he would have real problems, thats why I told him to check the TANK first. It does look like he is ok however which is good.

#16 PrometheanFlame

PrometheanFlame

    Nein, you tiny demons! NEIN!!

  • Members
  • PipPipPipPipPipPipPipPip
  • 9,357 posts
  • Gender:Male
  • Location:Cocoa, FL

Posted 17 January 2009 - 12:56 PM

Hm. Let's say you're going deep-sea diving. All your safety equipment plainly says, "Do not go deeper than 500 feet!" You want to go down to 1000 feet, but you don't want to buy gear that's rated for that depth. So, what do you do? You jump off the boat and sink down to 1000 feet. What happens? Your gear fails and you die.

That's sort of like what you're proposing here p_aint_ball.

Posted Image

Grammar Nazi Fuhrer : LL3 Soulja : Eleven Percenter


#17 p_aint_ball

p_aint_ball

    Sophomore Member

  • Members
  • PipPipPip
  • 493 posts

Posted 17 January 2009 - 01:04 PM

k guys... we solved the problem... its 4500 tank, dont need any more help thanks
Proto 07, UL barrel .692 14", Halo B v35, Warrior speed feed, Ndz roller trigger, guerilla air 46/45 myth tank

#18 CRU_Paintball

CRU_Paintball

    Senior Member

  • Members
  • PipPipPipPipPip
  • 2,049 posts

Posted 17 January 2009 - 01:10 PM

Promethian that is not what he WANTED to do. What he said is he THOUGHT he had a 3000 PSI tank and when he took it to the store they filled it to 4500. He didnt ask for it to be filled to 4500. The reason the store filled it to 4500 PSI is because it WAS a 4500 PSI tank. End of story and thanks for listening ;)

#19 PrometheanFlame

PrometheanFlame

    Nein, you tiny demons! NEIN!!

  • Members
  • PipPipPipPipPipPipPipPip
  • 9,357 posts
  • Gender:Male
  • Location:Cocoa, FL

Posted 17 January 2009 - 01:42 PM

Promethian that is not what he WANTED to do. What he said is he THOUGHT he had a 3000 PSI tank and when he took it to the store they filled it to 4500. He didnt ask for it to be filled to 4500. The reason the store filled it to 4500 PSI is because it WAS a 4500 PSI tank. End of story and thanks for listening ;)


Fair enough. Didn't notice that he had already resolved the problem. My bad.

Posted Image

Grammar Nazi Fuhrer : LL3 Soulja : Eleven Percenter


#20 Lt. Blood

Lt. Blood

    Professional

  • Members
  • PipPipPip
  • 428 posts
  • Gender:Male
  • Location:Panama City, Panama

Posted 18 January 2009 - 09:57 AM

Just ask them to fill it to 300 or it could blow. You want to keep it at the limit usually.

80% of teens listen to Hip-Hop, if you're part of the 20% that hates that shit , put this in your sig!Go ahead and throw your ions. I'll just catch them and throw em' back, except harder You may live in a 500,000 dollar house but i live in a 2 dollar box under a 6,000,000 dollar bridgeSave a rock,throw a tippmann its ok you won't be able to hurt it.put this on ur sig if u feel a need to call paintcheck........even if all you can see is orange! If you live in Panama, hit me up.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users