I was looking at using the 40's for mine.

It's a little larger around then the Faber 20's which is 3.9 while the Worth is 5.4. And around 3.3lbs heavier per tank. The Worth is .75 shorter of a tank. Total weight though, the Worth weighs 10.6lbs more. Each...

But if you can get it filled. It would be 40cf instead of 19. If you own a booster. Sweet. At 6.6lbs heavier in water with 2 tanks. I just wonder how they balance out. And making my Rebreather 21lbs heavier because of the tanks minus 6.6lbs for the Weight reduction of your backplate or weight would equal out to 14.4lbs heavier. And an extra 40cf of gas should weigh about 3lbs or so. Would be nice if they could knock 5lbs off each cylinder.

Worth's are also Spray galvanized

psi
+10% CF Dia Height Weight WeightMT Weight Full
Faber 13 2400 13 3.9 14 5.9 -2.25 -3.31
Faber 20 2400 20 3.9 19.5 7.5 -1.5 -3
Worth 13 3130 13 4 12.5 6.9 -2.3 -3.3
Worth 19 3130 19 4 16.5 9.3 -2.2 -3.8
Worth 30 3130 30 5.4 14.75 14.9 -3.9 -6
Worth 40 3130 40 5.4 18.75 18.1 -3.3 -6.3

Well, I had it spaced right. And when it submitted it took all the spaces out...Sorry...