Help to identify HP steel tank (USDiver/AquaLung HP3.5)

[PriusDrIVER]

Thanks, rjack321 and ClevelandDiver. I was just doing more searching and posting when you put your replies in. That is all good information. I think I will see what I can get these for and take them.

As for PST's status, the tanks likely aren't under any warranty...and if they were to blow up and kill me, I wouldn't be around for litigation anyway Good companies go out of business or are aquired all of the time, doesn't necessarily reflect on their product.

 

[rjack321]

Even if PST goes away, the exemption can be renewed by 3rd parties. That is not germane to a decision about the viability/worth of these tanks.

 

[PriusDrIVER]

The fax that is listed in the 2nd thread posted by ClevelandDiver makes me a little concerned about PST's status. So the DOT exemption is now "valid through August 31, 2007". If the company no longer exists, does the DOT exemption go with it? Is this a federal liability thing? Is an item produced under an exemption somehow dangerous after the exemption expires?

Seems confusing to me. What it comes down to is this, will a owner of the cylinders produced under this exemption be able to fill them after it expires (assuming PST goes away)? I now see the reason to be concerned, it would be an expensive 10-months of cylinder "rental" if this exemption was to expire. I guess on the bright side, i could make bells out of them and still be cheaper than Japanese gardens and other shops sell them for

 

[rjack321]

The exemptions have to be periodically renewed. Normally the company does this. However if PST were to completely disappear (they haven't, they were bought out by a Korean company) it is totally feasible for a diver or group of divers to renew all of the 9791 exemptions. No problem.

Really, I wouldn't worry about it. There are thousands and thousands of E9791 tanks out there and they will not suddenly be illegal to fill next September. The exemption will be renewed by the company or by owners.

I have 6 x E9791 tanks and would buy more.

 

[spectrum]

Pete (spectrum),

Thanks for the info. Are yours branded as USDiver/Aqua Lung?

Yes

If you look closely between the serial number and first hydro you will see the Pst logo.

Pete

 

[PriusDrIVER]

Thanks for all of the feedback and info. I went ahead and picked them up today, got the 2 cylinders (even the stickers are in pretty good shape) and a like-new gear bag for less than 1-cylinder new.

They are off to hydro, vip and oxygen clean tomorrow.

 

[jbarry_underwater]

The sherwood and USD rebranded HP tanks were both made by PST. They are not spun clyinders and that's not very important anyway.

Oddly enough for neck sizes, 7/8" is SMALLER than the now standard 3/4" I forget why, but 7/8" is actually about 1/2" in reality.

You can still buy valves, try dive-rite express or TDL.

Working through the small hole really isn't a big deal and you'll probaby only need them tumbled occisionally anyway - assuming you don't get water in there.

If the galvanizing is good, VIPs are ok, and the price right there's no reason to not to buy these tanks.

Old thread but does anyone know if there was any change in weight or buoyancy characteristics between the Sherwood/Genesis and US divers/aqualung steel tanks? I have one branded aqualung hp 3.5 and a set of left and right hand valves, I found a matching tank branded Sherwood/genesis and wondering if I side mount them will there be any difference?

 

[Still Kicking]

Old thread but does anyone know if there was any change in weight or buoyancy characteristics between the Sherwood/Genesis and US divers/aqualung steel tanks? I have one branded aqualung hp 3.5 and a set of left and right hand valves, I found a matching tank branded Sherwood/genesis and wondering if I side mount them will there be any difference?

I doubt it. Sherwood and US Divers were the marketing companies; the tanks were all made under the same exemption by Pressed Steel.

 

[jbarry_underwater]

I doubt it. Sherwood and US Divers were the marketing companies; the tanks were all made under the same exemption by Pressed Steel.

That’s what I’m hoping, but I’ve also seen 2 Faber tanks the same size but made different years have weight and buoyancy differences so I’m a little hesitant to pull the trigger on it