So, I ran up to Tucson to find the OP's tanks. The first is pretty straight-forward:
Tank code in black.
TC-3ALM207
TC – Transport Canda
3AL – Aluminum Spec (Can)
M207 – Service Pressure in bar
DOT-3AL3000 UU26413 LUXFER 05A04 S030
DOT – Dept of Trans
3AL – Aluminum Spec (US)
3000 – Service Pressure in psi
UU26413 – Serial Number
Luxfer – Manufacturer
05 – Month of Mftr
A – Mark of inspector
04 – year of manufacturer
S030 - Model
Here's the second tank - about the size of a Spare Air, I think, and with one 'continuous' line around the neck. What the heck is it, and what's it for?
TC - 3ALM20700T - 3AL3000 BV007156 M4002 07C04 CATALINA S6
TC – Transport Canda
3AL – Aluminum Spec (Can)
M207 – Service Pressure in bar
00T = ??????
Assuming
3AL - Aluminum Spec (US)
3000 - Service Pressure in psi
BV007156 = Serial number
M4002 = ???????
07 = Month of Manufacturer
C = Inspector
04 = Year of Manufacturer
CATALINA = Manufacturer
S6 = Model
Tank code in black.
TC-3ALM207
TC – Transport Canda
3AL – Aluminum Spec (Can)
M207 – Service Pressure in bar
DOT-3AL3000 UU26413 LUXFER 05A04 S030
DOT – Dept of Trans
3AL – Aluminum Spec (US)
3000 – Service Pressure in psi
UU26413 – Serial Number
Luxfer – Manufacturer
05 – Month of Mftr
A – Mark of inspector
04 – year of manufacturer
S030 - Model
Here's the second tank - about the size of a Spare Air, I think, and with one 'continuous' line around the neck. What the heck is it, and what's it for?
TC - 3ALM20700T - 3AL3000 BV007156 M4002 07C04 CATALINA S6
TC – Transport Canda
3AL – Aluminum Spec (Can)
M207 – Service Pressure in bar
00T = ??????
Assuming
3AL - Aluminum Spec (US)
3000 - Service Pressure in psi
BV007156 = Serial number
M4002 = ???????
07 = Month of Manufacturer
C = Inspector
04 = Year of Manufacturer
CATALINA = Manufacturer
S6 = Model