High or Low pressure steel tank?

[xiSkiGuy]

So why illegally overfill an LP tank when the HP tank can do all the LP tank can and more?

Because no one makes an exemption series equivalent of the LP85.

But when it comes to LP95s/X8-119s or LP104s/E8-130s, I agree with you 100%.

 

[S. starfish]

Be careful here, if you pick up a 3500 PSI HP cylinder (probably used) it will be strictly DIN.

If you get a more common pseudo HP cylinder, usually rated at 3442 but certainly something under 3500 PSI you will probably have the convertible DIN/yoke valve. As mentioned plenty of divers use these with yokes by many of use prefer to run the DIN configuration.

Pete

Thanks for catching that, I am indeed talking about the 3442 psi cylinders. true 3500 psi cylinders are rare in these parts, I'm the only person I knwo who has one and it does indeed come with a 300 bar din valve.

 

[Splitlip]

I believe that was when OMS was rebadging Faber LP tanks, but I've never seen the Faber marketed equivalent. They since have been rebadging PST E series tanks and when those dried up, I think they went back to Faber for the FX series.

I believe you are correct sir.

 

[SparticleBrane]

I'm also going to point out that, to the best of my knowledge, no one makes LP100s.

 

[Tortuga James]

On my boat, I have a bench seat/tank box configured to accomodate 8 AL80's. It is a small boat, so I can't reach the depths that require more gas, so 80's are fine. Currently, I don't own any tanks, but have been considering getting a couple.

HP steel may be a great option, because I would like the higher capacity for when I go on charters that go to the deeper wrecks. Right now I have just been renting AL100's.
What HP steel tank would you guys recommend that would get me 100+ capacity, but still fit in my rack designed to accomodate AL80's?

 

[Warren_L]

Because no one makes an exemption series equivalent of the LP85.

But when it comes to LP95s/X8-119s or LP104s/E8-130s, I agree with you 100%.

That is a good point - if the tank size you're looking for is not available in the equivalent HP version.

 

[Eileentk]

PST 100 if you can find any (they stopped making them recently). I have two and they are the same size as the LP 80 mainly because it's the same tank with a different fill pressure rating.

 

[TimK]

I dive both a Worthington High Pressure steel 100 and a steel 130. The 100 is the same diameter as an al80 (7.25 inches) but shorter than an al80. The 130 has a larger diameter (8 inches) and is about the same height (25.5 inches) as an al80. I have a yoke 1st stage and have had no problems. I took about 11 pounds of lead off by switching to steel.

 

[divermatt]

I think my Faber HP 100's are 7.25 inches. I'm not sure I'd want a tank that was -7/-14 in NC though.

 

[GrandpaScuba]

I'm in the market for my first tank. I'll be diving in new england with a full 7mm suit so I'm trying to get rid of any weight I can. I like the price of the aluminum 80's but I've decided to bite the bullet and get a steel. How much smaller are the HP tank's than the LP's. I remember diving with a HP 100 and liked the size. Also, do you need a DIN reg with the HP?

The 3500psi tanks have become harder to find. They have been replaced, mostly, with the 3442psi tanks. The 3442psi 100's have very close to the same bouyancy characteristics as the 3500psi tanks. But the 3442's have one advantage, they can use the convertable valves that handle both DIN and yoke regulators. Though I still suggest the use of DIN.