View Full Version : Hydro rule - 2" tanks
Lohman446
03-09-2010, 10:56 AM
I was under the impression that tanks under 2" diameter were not subject to hydro testing.
There has been some discussion that they are in a for sale thread (not a complaint, my thread and I surely do not want to sell anything or tell anyone something not accurate). It doesn't effect the sale at all as its already sold.
So, I figured I would put the discussion here and see what kind of input we got.
Dend78
03-09-2010, 10:59 AM
I was under the impression that tanks under 2" diameter were not subject to hydro testing.
There has been some discussion that they are in a for sale thread (not a complaint, my thread and I surely do not want to sell anything or tell anyone something not accurate). It doesn't effect the sale at all as its already sold.
So, I figured I would put the discussion here and see what kind of input we got.
from what i understand you are correct, at least within the states
Hobbez
03-09-2010, 11:26 AM
Any tank under 2 inches in diameter and under 2 feet long is exempt from hydro testing. Mind you, the tank has to fit BOTH of these rules. I know this from first hand experience, as I have several 9 oz co2 tanks that don't evan have born on dates ( they are at least 25 years old) that started lengthy discussions, and a web search to astm standards page, when I tried to get them filled. :p
http://www.astm.org/Standard/index.shtml
athomas
03-09-2010, 11:41 AM
In Canada, same thing. 2" and under do not need to be tested. They still need to pass a general visual inspection prior to filling. If the tanks have any noticeable deformities that could make them subject to failure, then they can be refused.
CatoRockwell
03-09-2010, 12:43 PM
Good to hear, just bought 2 22ci hpa tanks for my d day panzerfausts on eBay
WickedKlown2
03-09-2010, 03:25 PM
There has been some talk over at MCB about 13 CI and 22 CI tanks as well...
Here is the information found...
http://www.fmcsa.dot.gov/rules-regulations/administration/fmcsr/fmcsrruletext.aspx?chunkKey=09016334800475b8&keyword=tank
http://www.c-f-c.com/gaslink/docs/dot_cylinder.htm
http://en.wikipedia.org/wiki/Hydrostatic_test
Now from my understanding after reading all that if your 13 or 22 CI tank has a certain born on date that it falls into the must be re-hydro tested every 5 years...
WK2
ArmyEngineer
03-09-2010, 08:18 PM
Doesn't the special permit or exemption still need to be current? Not that any filler would ever check...
Requalification (HYDROTESTING) not required per the note under table 1 in 49CFR part 180.205. The note reads, "Any cylinder not exceeding two (2) inches in outside diameter and less than two (2) feet in length is exempt from volumetric expansion testing."
from:
http://www.hydrotester.com/when.htm
if your 13 or 22 CI tank has a certain born on date that it falls into the must be re-hydro tested every 5 years...
Do you know what dates they are?
I was going to look into this but I forgot
Powered by vBulletin® Version 4.2.3 Copyright © 2024 vBulletin Solutions, Inc. All rights reserved.