Scared Silly
Contributor
The born date on your cylinder is 7/77.
Tank ID help
- Thread starter undrwater
- Start date
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OP
undrwater
Contributor
Hah! Any idea what the 8*84 stands for? I thought that was the born on date.
I cant remember off the top of my head, they dont come very often, but i think the working pressure is 2600? The 8*84 is probably a hydro date. If its in line with manufacturer / serial number then its the first hydro date
Scared Silly
Contributor
DOT-3AA-3000 3aa == steel 3000 working pressure
777671 Serial number
7/77+ plus indicated 10% over fill. i.e. can be filled to 3300psi
8/84 5/90 5/95 9/00 are all subsequent hydro dates (RIN is the 4 numbers between the month and year)
When you get a new hydro ask for the + however you are going to need to find the REE value for the shop.
777671 Serial number
7/77+ plus indicated 10% over fill. i.e. can be filled to 3300psi
8/84 5/90 5/95 9/00 are all subsequent hydro dates (RIN is the 4 numbers between the month and year)
When you get a new hydro ask for the + however you are going to need to find the REE value for the shop.
Last edited:
OP
undrwater
Contributor
I'll just dive it. That'll tell me if it's closer to the 72 or the 100. I hope it's nice and negative throughout the dive.
OP
undrwater
Contributor
I thought I might provide a side by side for comparison.
With valves at the top, far left is the tank in question, middle is the lp 72, and right is the hp 100.
It looks to be about the same height as the 72.
With valves at the top, far left is the tank in question, middle is the lp 72, and right is the hp 100.
It looks to be about the same height as the 72.
OP
undrwater
Contributor
Scared Silly
Contributor
Get it filled to 3300 psi and put into a bucket of water large enough that it can sink. Tie a string to the valve and attach to a fish scale. See what it says.
Do the same when empty. If it floats add weight until it sinks.
The weight difference will also give you an idea of the air capacity.
Do the same when empty. If it floats add weight until it sinks.
The weight difference will also give you an idea of the air capacity.
OP
undrwater
Contributor
Apparently this tank was ID'ed here on SB before!
PST Tank ID Question [Archive] - ScubaBoard - Scuba Diving Forum - Diving Social Network
---------- Post added June 30th, 2013 at 10:10 PM ----------
And here's the photo of my 3 tanks together. Top is tank in question, next is lp72, bottom is hp100:
https://dl.dropboxusercontent.com/u/10059232/20130623_213702.jpg
PST Tank ID Question [Archive] - ScubaBoard - Scuba Diving Forum - Diving Social Network
---------- Post added June 30th, 2013 at 10:10 PM ----------
And here's the photo of my 3 tanks together. Top is tank in question, next is lp72, bottom is hp100:
https://dl.dropboxusercontent.com/u/10059232/20130623_213702.jpg
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