Cylinder Storage

Should cylinders be stored empty or full if they are not going to be used
for some time?
Thanks.

--

Richard Newman wrote:
> Should cylinders be stored empty or full if they are not going to be used
> for some time?
> Thanks.

Stored with a couple hundred psi pressure.

In article <AW61b.12085$uh6.11936@lakeread05>, nitespark@cox.net says...
>
>
>
>Richard Newman wrote:
>> Should cylinders be stored empty or full if they are not going to be used
>> for some time?
>> Thanks.
>
>Stored with a couple hundred psi pressure.
>

Agreed. Also, this is more important for aluminum (especially older Luxfer)
cylinders than steel.

I believe that they should be stored with a limited amount of gas in them. A
full cylinder would be bad in that if it was heated too much you could
rupture the burst disc and an empty cylinder is bad because contaminated air
(damp, etc) can enter the cylinder when the pressure differential is zero.
Store it with 500psi maybe?
Craig.


"Richard Newman" <anja.colley@ntlworld.com> wrote in message
news:gA41b.2720$tS2.1772336@newsfep2-win.server.ntli.net...
> Should cylinders be stored empty or full if they are not going to be used
> for some time?
> Thanks.
>
> --
>
>
>
>

In article <gA41b.2720$tS2.1772336@newsfep2-win.server.ntli.net>,
"Richard Newman" <anja.colley@ntlworld.com> asked:

>Should cylinders be stored empty or full if they are not going to be
>used for some time?

In theory, they should be stored with about 500psi -- enough to keep
moisture and other contamination out, but not enough to stress the metal.

In practice, clinders stored empty have become contaminated.
As for cylinders stored full -- I've never heard of any problems.

What difference does it make if the tank is emptied and re-filled
once a week/month or so, or if it is just left full?

--
Charlie Hammond -- Hewlett-Packard Company -- Ft Lauderdale FL USA
(hammond@not@peek.ssr.hp.com -- remove "@not" when replying)
All opinions expressed are my own and not necessarily my employer's.

Alan Street wrote:
> In article <AW61b.12085$uh6.11936@lakeread05>, nitespark@cox.net says...
>
>>
>>
>>Richard Newman wrote:
>>
>>>Should cylinders be stored empty or full if they are not going to be used
>>>for some time?
>>>Thanks.
>>
>>Stored with a couple hundred psi pressure.
>>
>
>
> Agreed. Also, this is more important for aluminum (especially older Luxfer)
> cylinders than steel.

I think it equally applies to steel tanks to avoid rust forming on the
inside.

In article <9i91b.12094$uh6.1367@lakeread05>, nitespark@cox.net says...
>
>
>
>Alan Street wrote:
>> In article <AW61b.12085$uh6.11936@lakeread05>, nitespark@cox.net says...
>>
>>>
>>>
>>>Richard Newman wrote:
>>>
>>>>Should cylinders be stored empty or full if they are not going to be used
>>>>for some time?
>>>>Thanks.
>>>
>>>Stored with a couple hundred psi pressure.
>>>
>>
>>
>> Agreed. Also, this is more important for aluminum (especially older Luxfer)
>> cylinders than steel.
>
>I think it equally applies to steel tanks to avoid rust forming on the
>inside.
>

I was referring to the lower pressure rather than totally empty.

I store mine full (or partially empty down to 500psi)
and I've never had a problem with them. no leaks,
nothing. And I keep them in the garage where the
temp varies easily over 100f in the hot sun with
an outside temp of 90f today. I've never had
a burst disk either.

I would suggest you not to store them at 0 psi or empty.
you'll want some pressure in the tanks, at least 50psi
to keep out contaminents.

mike

hammond@not@peek.ssr.hp.com (Charlie Hammond) wrote in message news:<wA81b.3014$jS5.678@news.cpqcorp.net>...
> In article <gA41b.2720$tS2.1772336@newsfep2-win.server.ntli.net>,
> "Richard Newman" <anja.colley@ntlworld.com> asked:
>
> >Should cylinders be stored empty or full if they are not going to be
> >used for some time?
>
> In theory, they should be stored with about 500psi -- enough to keep
> moisture and other contamination out, but not enough to stress the metal.
>
> In practice, clinders stored empty have become contaminated.
> As for cylinders stored full -- I've never heard of any problems.
>
> What difference does it make if the tank is emptied and re-filled
> once a week/month or so, or if it is just left full?

Alan Street wrote:
> In article <9i91b.12094$uh6.1367@lakeread05>, nitespark@cox.net says...
>
>>
>>
>>Alan Street wrote:
>>
>>>In article <AW61b.12085$uh6.11936@lakeread05>, nitespark@cox.net says...
>>>
>>>
>>>>
>>>>Richard Newman wrote:
>>>>
>>>>
>>>>>Should cylinders be stored empty or full if they are not going to be used
>>>>>for some time?
>>>>>Thanks.
>>>>
>>>>Stored with a couple hundred psi pressure.
>>>>
>>>
>>>
>>>Agreed. Also, this is more important for aluminum (especially older Luxfer)
>>>cylinders than steel.
>>
>>I think it equally applies to steel tanks to avoid rust forming on the
>>inside.
>>
>
>
> I was referring to the lower pressure rather than totally empty.
>
OKey Dokey. I think we agree.

If a tank does get down to 0 psig then it should get a
VIP before refilling. The shops I go to will require a
VIP prior to filling a completely empty tank.

michael


Michael Sutton wrote:
>
> I would suggest you not to store them at 0 psi or empty.
> you'll want some pressure in the tanks, at least 50psi
> to keep out contaminents.
>
> mike