Norris 55 Specifications

[sdavo]

I believe the pictured tanks are Norris 55s. Norris stamp on them, 3AA, 2015 psi. Does anyone have specifications for these tanks - buoyancy, etc.?

 

[sdavo]

Norris still makes a 2015 psi, 55 cf, 3AA cylinder. Dimensions seem about the same as what I have. Maybe it's the same cylinder still in production?

55CF

 

[rjack321]

If the same cylinder...

650 cubic inches is 10.6L water capacity. Those are going to be surprisingly heavy in the water. 32 lbs weight, and about 24lbs of buoyancy = negative 8lbs which is a little surprising to me. Normally older lp cylinders have such thin walls they arent so negative

 

[sdavo]

On closer inspection they don't seems to be exactly the same tanks as the current 55 cf on the Norris website. Mine are 1 - 2 inches shorter.

I weighed my set - 53.5 pounds with manifold, bands, and boots. Maybe 25 pounds per tank with regular k valves.