WARPIG Tech Talk - Air - Re: You kinda answered your own question.


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Re: You kinda answered your own question.

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Posted by Lance Sherst on May 09, 2002 at 22:14:56:

In Reply to: You kinda answered your own question. posted by tamu on May 09, 2002 at 13:00:37:

: If they are tested at 5000psi and pass, wouldn't that explain the 5000psi burst disc? Seems pretty safe.

: : : : I'm a little confused? Why on a 3000 psi tank would someone put a 5000 psi burst disc? This is the test pressure that the tank is tested to. Most burst discs are usually 600 psi over service pressure and in this case it would be 3600 psi. You can't legally fill 10% over for safety reasons and that would only be 3300 psi. This is a serious safety concern.
: : : : Hydro2go

: : : Actually,These tanks are tested to 2 1/2 times their rated pressure,in this case 7500 psi for a 3000psi tank. If you have an overpressure problem(Probably while filling the tank) and your low pressure burst disc fails to work(Or you don't have one) you have a Burst Disc(In this case 5000psi)which can help exhaust the pressure in your tank before it blows up in your face(Not a pretty sight).Centerflag uses a 7500psi burst disc on their 420 series 4500psi tanks and it is the only one on the tank. Hope this helps

: : *Just a clarification on 3000 psi. These tanks are tested to 5/3 rated pressure which is 5000 psi. not 7500#
: : Hydro2go

I think your mistaken because you wouldn't have a burst disc rated to the tested pressure of the tank(You say 5000).A system like that would be useless.What good is a burst disc,which is a SAFETY Feature be set at the maximum safe pressure of the tank.Would it not make sense to set it a little lower than the max pressure because if it did fail you would have absolutely no margin of safety before the tank blew up.That is why all burst discs are set at a lower pressure than the maximum safe pressure of the tank.There is not a burst disc that I have heard of that is set to the same pressure as the max pressure of the tank.(Not the rated pressure).I hope I explained this right and if you can find a tank that has the burst disc the same pressure as the max pressure(not rated pressure)I would like to know who makes it.Maybe check your facts again.

Follow Ups:

Re: You kinda answered your own question. tamu 23:15:01 05/09/02 (2)
- Re: You kinda answered your own question. Steve "hydro2go" Gallagher 07:54:19 05/10/02 (1)
  - Re: Burst disk pressures Rat Thing
    22:29:11 06/10/02 (0)

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: : If they are tested at 5000psi and pass, wouldn't that explain the 5000psi burst disc? Seems pretty safe. : : : : : : I'm a little confused? Why on a 3000 psi tank would someone put a 5000 psi burst disc? This is the test pressure that the tank is tested to. Most burst discs are usually 600 psi over service pressure and in this case it would be 3600 psi. You can't legally fill 10% over for safety reasons and that would only be 3300 psi. This is a serious safety concern. : : : : : Hydro2go : : : : Actually,These tanks are tested to 2 1/2 times their rated pressure,in this case 7500 psi for a 3000psi tank. If you have an overpressure problem(Probably while filling the tank) and your low pressure burst disc fails to work(Or you don't have one) you have a Burst Disc(In this case 5000psi)which can help exhaust the pressure in your tank before it blows up in your face(Not a pretty sight).Centerflag uses a 7500psi burst disc on their 420 series 4500psi tanks and it is the only one on the tank. Hope this helps : : : *Just a clarification on 3000 psi. These tanks are tested to 5/3 rated pressure which is 5000 psi. not 7500# : : : Hydro2go : I think your mistaken because you wouldn't have a burst disc rated to the tested pressure of the tank(You say 5000).A system like that would be useless.What good is a burst disc,which is a SAFETY Feature be set at the maximum safe pressure of the tank.Would it not make sense to set it a little lower than the max pressure because if it did fail you would have absolutely no margin of safety before the tank blew up.That is why all burst discs are set at a lower pressure than the maximum safe pressure of the tank.There is not a burst disc that I have heard of that is set to the same pressure as the max pressure of the tank.(Not the rated pressure).I hope I explained this right and if you can find a tank that has the burst disc the same pressure as the max pressure(not rated pressure)I would like to know who makes it.Maybe check your facts again.

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