Question - Steel tanks

[hurley]

I want to buy a new steel tank, I have a 3442 psi, HP 80, the cylinder length is 27", I've found online a steel HP 80 3442 psi, 19.7" length, will this hold the exact amount of air even though it's over 7" shorter?

 

[crpntr133]

I find it hard to believe there is 7" difference and they hold the same amount of air.
If they are in both HP 80's then yes they hold the same amount. The pressure doesn't make a difference

BTW, the length of the cylinder does not include the valve.

 

[Jim Lapenta]

At 3442 the HP steel will hold 80 cu ft of air. If you want a new tank though I'd go with an lp85. easier to get full fills, trims out better and if filled to 3000 or so you've got yourself 95 cu ft of gas. Also lp's are usually easy to get full fills on. some shops only fill to 3000 even if it's a HP tank. Worst move I ever made was buying two of the HP80's cause my LDS got deal on them. I was new and didn't know any better. If you can get full fills that's cool but around here a couple places I know of have shut offs on their compressors set at 3200. They'll fill to that but when it cools down you got maybe 3000. And 3000 in an hp80 is a bit more than 69 cuft.

 

[crpntr133]

And then when you get an idiot on the fill station your LP's end up at 2400 because they don't know about the +. Yes I know about this from experience and tell everyone the rating before filling.

 

[Bob Vincent]

At 3442 the HP steel will hold 80 cu ft of air. If you want a new tank though I'd go with an lp85. easier to get full fills, trims out better and if filled to 3000 or so you've got yourself 95 cu ft of gas. Also lp's are usually easy to get full fills on. some shops only fill to 3000 even if it's a HP tank. Worst move I ever made was buying two of the HP80's cause my LDS got deal on them. I was new and didn't know any better. If you can get full fills that's cool but around here a couple places I know of have shut offs on their compressors set at 3200. They'll fill to that but when it cools down you got maybe 3000. And 3000 in an hp80 is a bit more than 69 cuft.

They are better because you can always get a 2400 psi fill for 80cuft and a 2640 fill to be at 80+ cuft. And pump them to 3000 / 3100 you have some air close to 96-97 cuft! But you have to tell whoever is filling the tanks it's a 2400lp with a 10%+ rating so tell him 2700 (2640) min. But you'd like it to hit 3200. Of course your going to the pool. I have 4-80lp 2400+, 1-80al, 1(2)-130's hpX2 doubles. Jim has good advice here!

 

[hurley]

Thank You!!!

 

[ruready7]

I got a LP 108. At 2640 108 cu ft but at 3000 130 cu ft. Nice for hoovers....lol