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Paintball air tanks are required by
the government to be hydrostatic tested every few years to ensure
they are structurally sound and safe for use. The life of air
bottles used for paintball purposes can be measured by their hydro
test date. Most modern air bottles must be tested every five years.
The date at which this must happen can be determined by checking the
bottle for information printed on it or stamped into it. CO2 bottles
and aluminum compressed air tanks have a date, in month and year,
stamped into them near the valve at the top, while an information
label is printed into the side of each carbon fiber compressed air
bottle, also with a month and year. Hydro testing must be performed
within five years from the date found on the bottle. Once tested,
the bottles will either be re-certified for another five years of
use, or will be rendered unusable should a reason be found not to
approve them such as visible damaged. |
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All cylinders have ratings that start with “DOT” or
“ICC,” followed by the service pressure of the container. For
example “DOT 3AA 1800” means a DOT approved cylinder made to the
“3AA” specification rated for 1800 psi. Some common ratings
and test intervals are below:
5-Year test:
DOT 3A
ICC 3A
DOT 3AA
ICC 3AA
DOT 3AL
3-Year test:
DOT 3HT |
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How to read Fiber Wrapped/Carbon
Fiber Cylinder Markings |
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How to read
C02 tank markings |
How to read Aluminum or Steel
Cylinder Markings |
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1. DOT Exemption Number 2. Service
Pressure (psi)
3. Serial Number
4. Manufacturer
5. Original Hydro Date with Testing
Agency Stamp
6. Rejection Elastic Expansion (cc) |
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1. Cylinder Specification consisting of three sections:
DOT – Department of Transportation
3AA – Specification of type and material of cylinder
construction.
2265 – Service Pressure in psi.
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2. 12345 – Cylinder serial number (See Note A)
3. Gas Inc. – Identifying symbol (See Note A)
4. Manufacturing Data:
4-70 – Date of manufacture and original test date.
XX – Inspector’s official mark.
+ - Cylinder qualifies for 110% filling.
5. YY – Manufacturer’s identifying symbol.
6. Retest Markings:
4-75 – Data of first 5 year hydrostatic retest
ABC – Retester identifying symbol.
+ - Cylinder requalifies for 110% filling.
* - Cylinder qualifies for 10-year retest interval.
7. Neck ring owner’s identification.
Notes:
A. Serial number and identifying symbol may be that of
purchaser user or manufacturer.
B. “Spun” or “Plug” must be stamped near DOT mark when an end
closure in the finished cylinder has been welded by the spinning
process or effected by plugging.
C. Markings “5” and “6” are usually shown diametrically
opposite other markings on the cylinder neck.
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No
Personal Checks Please. |
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Performance Paintball, Inc. |
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1250 Scottsville
Road, Suite 30A Rochester New York 14624 |
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585-328-0250
(store) 585-328-0242 (fax) |
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