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Old 01-10-2007, 10:43 AM   #1 (permalink)
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Okay, this was odd and has never happened before...

I was at work and received a phone call from my frantic wife. She works at home as a loan officer and called me freaking out saying that she heard an "Explosion" in the garage and said that it "has to be your paintball stuff". I was able to run home and check it thinking that my HPA tank exploded and ruined all my stuff. When I arrived at my house, I found one of my CO2 tanks had blown a burst disc and was completely frozen. My garage stays at a temp of ~40-50 degrees and the tank was lying down on top of my work bench minding its own business. The furnace is ~20 ft away and does not blow heat into the garage. There are no other heat sources to speak and the tank was no where near an electrical outlet. I have never had this happen before in the last 10 years of playing and was wondering if this is common or has happened to any of you guys. An explanation would be great as well. Thanks!!!
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Old 01-10-2007, 10:50 AM   #2 (permalink)
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Weak disc or overfill. It happens, and that's why they are there.

Every time you fill the tank and disn contract and expand. Thats also the reason we get hydro tests done, to check for metal weakening.
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Old 01-10-2007, 11:23 AM   #3 (permalink)
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Al and I had one go in the back of his car once... glad I wasn't driving.

It sounded exactly like the back half of the car was being ripped off and the inside filled with a cloud of CO2 so quickly that we could barely get our windows open fast enough so we could see the road.

Nutty, but fun.

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I still don't get that.
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Old 01-10-2007, 11:28 AM   #4 (permalink)
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In the old days, I probobly had 15-20 burst myself, including one in my car while driving, and another on the kitchen table while eating!

They used to come with 1800psi discs, though 3000psi discs seem to be the norm now. As such, its pretty rare today.

Plus, the local field didn't "zero" tanks, so they were probobly overfilled many as well. Warm days were like the 4th of july with burst discs going off all the time.

So, your tank was probobly slightly overfilled, and probobly had the 1800psi disc, and probobly absorbed just enough heat from the furnace to pop the disc.

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Old 01-10-2007, 11:28 AM   #5 (permalink)
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In all my years of playing and filling my own tanks, I've never had a burst disk go on me... knock on brassy wood.
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Old 01-10-2007, 11:47 AM   #6 (permalink)
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I have had one bust disc go on me. Dingle-dork downtown filled the tank, and it sat in the trunk of a car. I wasn't around to hear it though.
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Old 01-10-2007, 11:55 AM   #7 (permalink)
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Al and I had one go in the back of his car once... glad I wasn't driving.

It sounded exactly like the back half of the car was being ripped off and the inside filled with a cloud of CO2 so quickly that we could barely get our windows open fast enough so we could see the road.

Nutty, but fun.

D.
Hehe, that happened to Maggs and I once. I can only imagine what the bystanders thought.
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Old 01-10-2007, 12:12 PM   #8 (permalink)
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I had an HPA (4500) burst disc blow when I was driving once, it was freakin' scary. I thought something was wrong with the car!
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Old 01-10-2007, 03:36 PM   #9 (permalink)
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Talk to any scuba shop operator and they'll have lots of burst disc stories to tell.

A burst disc is just a very thin layer of metal shim foil that separates the tank from the atmosphere. Every time you fill the tank it puffs out like a trampoline with a 300 lb kid on it and then settles down to flat as the pressure goes away. Over a number of cycles the disc work hardens and becomes brittle. Eventually it'll fracture just like a bit of metal that you bend back and forth in your hands enough times.

This is why my scuba shop swaps out the burst discs on my scuba tanks as part of the 5 year hydro. Or maybe it's to save their OWN ears...
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Old 01-10-2007, 04:02 PM   #10 (permalink)
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A year ago the local paintball store was closed so I had to go to Dick's Sporting Goods to get my tank filled. On the way home the burst disk went off. It's a good thing my mom wasn't driving, we would have been in the ditch.
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