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Old 01-04-2007, 04:49 PM   #1 (permalink)
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7500psi Burst Disks!!! Good grief!!

http://cgi.ebay.com/2-UNIFIED-BURST-...QQcmdZViewItem

These things would be dangerous on a paintball tank of any kind!


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Old 01-04-2007, 05:23 PM   #2 (permalink)
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Actually, regular HP burst discs are actually 7250 IIRC. They just are rated at 4500psi. I was shocked to find out myself, but thats one of the things I learned teching with Air America.

Another interesting tidbit, Why do we need HP burst discs on a 4500psi system? There are very few systems that can over fill a 4500/5000 tank. On tank regs and bottles are rated MUCH higher than 4500, so it isnt really necessary. Now for safteys sake and CYA concerns, they use them.

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Old 01-04-2007, 07:57 PM   #3 (permalink)
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If you get vaporized oil in the tank, and a fill raises the flash point, you could conceivably need one I suppose. That's the only instance I can think of past leaving your compressor running all night with the tank hooked up to it.
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Old 01-04-2007, 08:06 PM   #4 (permalink)
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7500 is the normal PSI burst disc for 4500/5000 psi HPA tanks

Its more of a fail safe for the sake of morons.. almost every field I ever heard of or gone to can barely fill to 4500 let alone past that
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Old 01-04-2007, 08:29 PM   #5 (permalink)
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It woulf come in handto to plug a small leak I have in one of my inline regs....
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Old 01-05-2007, 05:28 PM   #6 (permalink)
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It's my understanding that they aren't 7500 PSI but instead the 7500 is essentially a model number. I was tracking down some parts at a scuba shop and their tech was explaining it to me. If you look on a 3000 psi system the burst disc is either 4500 or 5000 I think.
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Old 01-05-2007, 08:39 PM   #7 (permalink)
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Burst disks are 2/3 the rated burst pressure of a tank it is to prevent a tank from reaching critical point.
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Old 01-06-2007, 09:24 AM   #8 (permalink)
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Quote:
Originally Posted by BigOldSkool View Post
7500 is the normal PSI burst disc for 4500/5000 psi HPA tanks

Its more of a fail safe for the sake of morons.. almost every field I ever heard of or gone to can barely fill to 4500 let alone past that
Yep.
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Old 01-12-2007, 08:47 AM   #9 (permalink)
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Quote:
Originally Posted by B View Post
Burst disks are 2/3 the rated burst pressure of a tank it is to prevent a tank from reaching critical point.
5/3 the working pressure, actually. Same pressure as the hydro pressure (above which the tank should never be filled, ever.)
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Old 01-12-2007, 12:49 PM   #10 (permalink)
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I looked at my tank yesterday, one disk says 7.5k, the other says 2.5k
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