AIR HOG TANKS

[adrian]

has anyone used the steel 119ct tank thats rated 3500psi.im thinking of getting one for my house to use for my marauder.it says ill get 36 refills for the numbers i put into there calculater.any imfo on these tank will be helpful to me .THANK YOU

[melloroadman]

He has good products but you can save a lot of money if you shop around . I bought a new aluminum 3300 psi tank from a local scuba store for about $ 169 OR $ 189 about 6 months ago . Do a search or look on e- bay there are several dealers selling new tanks there as well . Remember steel is a lot heavier if you think you will ever be taking it away from home . Marvin

[wfmiller]

I have a couple of Steel 119's. They are rated at 3442 psi and I get them filled up to between 3700-3800 psi from my dive shop (I dive). I just got into PCP and have a GD tuned Marauder with the extension air tube. What a joy it is to fill from my tanks !!

[Zzyzx]

They are rated at 3442 psi and I get them filled up to between 3700-3800 psi from my dive shop (I dive).

How can any reputable dive shop fill them beyond their rated capacity? LIABILITY raises its ugly head here if anything... anything at all ever goes wrong with them. Don't overfill. Buy a new one rated for the pressures you need and save yourself some grief.

[wfmiller]

Zzyzx - 3/24/2010  4:03 PM

How can any reputable dive shop fill them beyond their rated capacity? LIABILITY raises its ugly head here if anything... anything at all ever goes wrong with them. Don't overfill. Buy a new one rated for the pressures you need and save yourself some grief.

You are joking me correct?  Do you have any idea what you are saying or did you just pull what you said out of a hat and threw it up against a wall in the hopes that it would stick?

[Zzyzx]

wfmiller, I do not understand how a tank can be rated for a specific fill and a dive shop fill it with more pressure? Please enlighten me.

[Gene_SC]

Josh, some dive shops will fill a scuba tank past the specified limit. The shop I go to will not do that but some do. Remember that a 3000 psi 80 cu/ft tank is tested to hold over 4000 psi. But some government agency sets the limits...:)  For instance if I had a scuba compressor to fill my own tanks I would fill my 3000 psi 80 cu/ft tanks to 3400 psi... and I would not blink an eye...:)  But also would follow the schedule for inspection and testing.

[longislandhunter]

I get my 3000 psi 80 cu/ft tank filled to 3300 psi.... never had any problems....

Jeff

[DougT]

I checked on having a custom built HPA tank hydro tested and asked a bunch of questions.  The testing company told me the standard is to test to 5/3 the rated pressure.  For example, a 3000# tank is hydro tested to 5000#.  Look at PB tanks or reservoirs on HPA guns and the 3000# tanks will have a 5K burst disc on the tank site.  Coincidence?  I think not.  I plan on taking good care of my new 22ci 3000# tank and pumping it to 3300# regularly.

I do agree that a dive shop that earns it's living of pressurized air fills would be open to liability if one ruptured and had been overfilled knowingly, even if the pressure didn't cause the problem.

[Zzyzx]

With a practice of filling a tank past its 'RATED' maximum, if an accident happened you would have a Tort and Personal Injury lawyer jumping up and down with delight when you came to them. Get it in front of a Jury that the thing was filled past the maximum SAFE rating and you have money awarded in compensatory and (most likely) major league punitive damages. Any good Plaintiffs attorney would have a field day with this one. Hot coffee at McDonalds ring a bell anyone?

[wfmiller]

Been diving, working and filling air at dive shops since the 70's. Tanks are regularly filled to set pressure plus 10% at just about anyplace I have worked or received fills from. There is a reason that tanks are Hydro tested every 5 years and visually inspected annually. Tanks also have a burst disk which is a safety device and releases the air from the cylinder if overfilled to an unsafe level. 10% over is not an unsafe level. Never has been and never will be.

Also many shops that do hot fills on tanks do so because once the tanks cool down the pressure comes down too....

To say it is unsafe to fill my tanks up at rated plus 10% is simply ridiculous without knowing the facts and or limitations of scuba tanks.

End of story !!

[Zzyzx]

Thanks for the info. I am looking at it as I would if I were to represent the plaintiff in a case where a tank had problems. "Rated fill pressure" vs "overfill" and liability questions measured in dollar amounts... presented to a Jury.