What are these markings? Hydro? Is this tank current. Supposedly from Japan.

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

Murrayhawaii

Registered
Messages
7
Reaction score
0
Location
Kauai/FLA
# of dives
I just don't log dives
imagepng
V 11.2
W 14.8

hand stamped on al80
 
Last edited:
Not sure how to
post a pic here
 
Japan uses the metric system. An 80cf tank is approximately 11.2 litres (I think) so maybe V11.2 means volume 11.2litres and at a guess i would say that W is the weight in kgs
 
Has anyone answered this? I'm looking at purchasing two used tanks with the same V11.2 marking and two different W numbers (W13.9 and W14.0) the scuba tanks are the same make and model. If you convert the 14kg you get 30.8lbs and 80cf catalinas are 31.6-31.8 lbs, so i don't think the W is for weight because i couldn't imagine that the testing equipment would be almost a pound off. Thanks in advance.
0
d
0
 
If the tanks don't have the US DOT markings, then buying them to use in the US is probably not a good idea, unless you have your own compressor. Excellent chance that no dive shop will fill them.

Also, Your images appear to be hosted at Google Photos (or some google property) with permissions that don't permit others to open them.
 
UN-USA, DOT, ICC, CTC, and TC are all legal to hydro in the USA. ie. legal to use in the US
Basically UN, US, & Canadian Cylinders.

However the Fill Station Operator can reject any of them if they make him feel unsafe.

Source: PSI/PCI Cylinder HAZMAT & Fill Station Operations Compliance PowerPt.
 
That means the tank weighs 14.8 kilograms, and has a volume of 11.2 liters.

Even the same make of tank will have small variations in the actual weight and volume due to variations that occur during the manufacturing process. I dive double 14L tanks here in Japan, and one is 14.2L, and the other 14.3L, with there also being a difference in weight as well, despite being the same model by the same manufacturer.

Japan has a completely different regulatory body and stamp for tanks than the US, so make sure the tank has any necessary stamps for fills in the country you'll be using it.
 

Back
Top Bottom