5000 psi in 4500psi?

[56kSomeGuy]

Is is dangerious to fill a 4500psi tank up to 5000psi and does it damage your tank? I ask this since i just got my new 88/45 filled at my local store and the guy there fill it all the way up to 5000psi at first i thought the bust disks would blow and lower the pressure but nothing happend and then i put it on my gun and it shot fine.

[petefol]

i wouldnt recomend it, 4500psi tanks are rated at 4500psi for a reason.

[EsPo]

im pretty sure its safe to fill to 5k. as the air inside the tank cools down, you loose air. so when he filled it to 5k, you prolly only got about 4.5k. the only problem you might have with filling that high would be the burst disk, and that only happens every once in a while i think. i think that 4.5k tanks are hydroed at like 6.5k or suttin.

[halB]

yes, it will damage your tank if you leave it like that for any length of time

[Kevmaster]

theres a reason the 4500psi tanks are rated to 4500psi and the 5000psi tanks are rated to 5000psi....DONT FILL A 4500PSI TANK TO 5000PSI!!

it is not made to hold that much pressure...

[Blazestorm]

The burst disks blow at 7500psi and the tank is hydroed at 150% of what it can hold, so that would be like 6750psi ... I think, because they hydro 3000psi tanks at 4500psi.

Oh well, I wouldn't recommend it, it's not like the tank is gonna rupture and explode on you causing millions of tiny bits of carbon fiber to rip your body to shreds... er... I mean... uh... Its fine

[sniper1rfa]

kev is right, kinda. although it will probably work fine, you are getting up in the margin of safety (a boeing 747 can handle 3 g's, doesnt mean your gunna go around doing barrel rolls in one...). The tank is designed to work at probably 5k-ish, but thats for a safety margin.


fill only to 4500 psi!

[BajaBoy]

i dunno why but they use to fill my crossfire 88 3000 to 2600... (then cools off to like 2400)

and my 3000 flatline to.. 32-3300..? (then the fitting cool off to 3000)

its ok to do that but your reg isnt gunna stand up to it all of he time

[toymyster]

I'm with Kev and Sniper on this one!! If 4500 tanks were designed to work at 5000psi, they would be called 5000psi tanks, not 4500!!

[Kevmaster]

oh, and also, the REGULATOR may also not be made to hold 5000psi...as the seals may burst...leaking out the wazoo!

[halB]

it also may stretch your tank too much, causing it to fail hydro

[FordPrefect]

Originally posted by Blazestorm
the tank is hydroed at 150% of what it can hold, so that would be like 6750psi ... I think, because they hydro 3000psi tanks at 4500psi.

For your information, tanks are hydroed for 5/3 of their rated pressure. So a 3000 psi tank is actually hydroed at 5000 psi, and 4500 tanks are hydroed at 7500 psi.

[sniper1rfa]

nah, the reg wil take it, but again, there will be little to no safety margin if you fill that high.

the reg will be designed to take more (5k prolly) because otherwise they (the manufacturer) might get SUED up the wazoo when the reg fails, due to being made for 4500.

[Kevmaster]

no, the regs are DESIGNED to hold 4500, but WILL TOLERATE over 10,000psi

the DynaFlow reg, for example burst at 27,000psi...and is only marked for 4,500psi

[cwuchu]

Is the gauge you read the 5000 psi a micro gauge? When I got my flatline filled for the first time, I noticed that the gauge read 5000 too, but the fill station gauge read 4500. I'm guessing that the micro gauge is off, not the fill station's gauge. The micro gauges aren't the most accurate of gauges out there, so if it is one of them, I'd check with the filler to make sure he's filling the tank to 4500psi.