300 Bar DIN valve tanks

300 Bar DIN valve tanks

Post by M. Fec » Thu, 20 Dec 2001 01:51:18


Can anyone tell me if 300 bar DIN valve tanks are available in the US and if
so, where can I get a couple?  I just came from the UK - they were
relatively easy to come by over there.  I'd like to get the equivalent of 12
liter tanks if I could.

Mike

 
 
 

300 Bar DIN valve tanks

Post by Bob Rowlett » Fri, 21 Dec 2001 07:18:52

Mike,

300 bar DIN valves are available here in the US, but are more commonly
used by cave and tech divers than recreational divers. Almost any dive
shop should be able to get them for you. Then of course there are all
the well known mail-order sources in the US like Divers Supply,
Northeast Scuba, Fifth Dimension, Leisure Pro, etc.

I'm not sure about the UK, but here in the US there are LP (low
pressure) and HP (high pressure) steel tanks available. LP tanks have
a nominal fill pressure of 2640 psi or about 184 bar, and overfilling
to 3200 to 3600 psi or so is common. HP steel tanks are more compact
and have a working pressure of 3500 psi or about 232 bar I think. In
the US, a 12 liter LP steel tank would be rated as having a capacity
of 80 cubic feet I believe. I personally own and use Faber 15 and 17
liter LP steel tanks (sold here as 95 and 108 cu ft) and use both 200
and 300 bar DIN valves with them.

Good luck,

Bob



Quote:
>Can anyone tell me if 300 bar DIN valve tanks are available in the US and if
>so, where can I get a couple?  I just came from the UK - they were
>relatively easy to come by over there.  I'd like to get the equivalent of 12
>liter tanks if I could.

>Mike


 
 
 

300 Bar DIN valve tanks

Post by M. Fec » Fri, 21 Dec 2001 23:04:48

Thanks,
  It seems that my dream of obtaining that 4350 psi (300 bar) fill will not
come true here in the States.  It killed me to have to sell my tanks when I
left the UK - they don't have the proper stamps on them.  They were Faber
tanks, I called the home office in Italy, here's what I was told - the tanks
are identical from the UK and the US, they are just marked differently.
Man, I wanted in the worst way to bring those tanks with me, but I knew I
would have trouble getting them filled.

Mike


Quote:
> Mike,

> 300 bar DIN valves are available here in the US, but are more commonly
> used by cave and tech divers than recreational divers. Almost any dive
> shop should be able to get them for you. Then of course there are all
> the well known mail-order sources in the US like Divers Supply,
> Northeast Scuba, Fifth Dimension, Leisure Pro, etc.

> I'm not sure about the UK, but here in the US there are LP (low
> pressure) and HP (high pressure) steel tanks available. LP tanks have
> a nominal fill pressure of 2640 psi or about 184 bar, and overfilling
> to 3200 to 3600 psi or so is common. HP steel tanks are more compact
> and have a working pressure of 3500 psi or about 232 bar I think. In
> the US, a 12 liter LP steel tank would be rated as having a capacity
> of 80 cubic feet I believe. I personally own and use Faber 15 and 17
> liter LP steel tanks (sold here as 95 and 108 cu ft) and use both 200
> and 300 bar DIN valves with them.

> Good luck,

> Bob



> >Can anyone tell me if 300 bar DIN valve tanks are available in the US and
if
> >so, where can I get a couple?  I just came from the UK - they were
> >relatively easy to come by over there.  I'd like to get the equivalent of
12
> >liter tanks if I could.

> >Mike


 
 
 

300 Bar DIN valve tanks

Post by Bob Rowlett » Sat, 22 Dec 2001 01:06:48

Mike,

I'm certainly no expert on high pressure gas fills. What I've decided
works for me best is to use LP steel tanks that I normally fill to
anywhere between the nominal fill pressure of 2640 psi to 3600 psi
depending on what I'm doing. (In North Florida -- cave country --
typically they will fill your tanks to about 3600 psi unless you ask
them not to!) With the LP steel tanks, I like to use 300 bar DIN
valves to take advantage of the extra threads. This is what most cave
and tech divers that I know do as well.

Another consideration depending on what part of the country you are in
is that high pressure air fills may not be readily available. LP steel
tanks make sense to me from that standpoint as well. Based on my
admittedly limited experience, HP steel tanks are more common in some
areas than others.

It is my understanding that the US DOT (Department of Transportation)
is responsible for the rules governing compressed gas cylinders that
are transported on public roads, so scuba tanks used here are supposed
to be US DOT spec.

Best,

Bob



Quote:
>Thanks,
>  It seems that my dream of obtaining that 4350 psi (300 bar) fill will not
>come true here in the States.  It killed me to have to sell my tanks when I
>left the UK - they don't have the proper stamps on them.  They were Faber
>tanks, I called the home office in Italy, here's what I was told - the tanks
>are identical from the UK and the US, they are just marked differently.
>Man, I wanted in the worst way to bring those tanks with me, but I knew I
>would have trouble getting them filled.

>Mike



>> Mike,

>> 300 bar DIN valves are available here in the US, but are more commonly
>> used by cave and tech divers than recreational divers. Almost any dive
>> shop should be able to get them for you. Then of course there are all
>> the well known mail-order sources in the US like Divers Supply,
>> Northeast Scuba, Fifth Dimension, Leisure Pro, etc.

>> I'm not sure about the UK, but here in the US there are LP (low
>> pressure) and HP (high pressure) steel tanks available. LP tanks have
>> a nominal fill pressure of 2640 psi or about 184 bar, and overfilling
>> to 3200 to 3600 psi or so is common. HP steel tanks are more compact
>> and have a working pressure of 3500 psi or about 232 bar I think. In
>> the US, a 12 liter LP steel tank would be rated as having a capacity
>> of 80 cubic feet I believe. I personally own and use Faber 15 and 17
>> liter LP steel tanks (sold here as 95 and 108 cu ft) and use both 200
>> and 300 bar DIN valves with them.

>> Good luck,

>> Bob



>> >Can anyone tell me if 300 bar DIN valve tanks are available in the US and
>if
>> >so, where can I get a couple?  I just came from the UK - they were
>> >relatively easy to come by over there.  I'd like to get the equivalent of
>12
>> >liter tanks if I could.

>> >Mike

 
 
 

300 Bar DIN valve tanks

Post by M. Fec » Sat, 22 Dec 2001 05:23:45

The DOT issue was the reason I could not bring the tanks I had from the UK.
As I posted earlier, according to the manufacturer the tanks are identical,
just marked differently.

Mike


Quote:
> Mike,

> I'm certainly no expert on high pressure gas fills. What I've decided
> works for me best is to use LP steel tanks that I normally fill to
> anywhere between the nominal fill pressure of 2640 psi to 3600 psi
> depending on what I'm doing. (In North Florida -- cave country --
> typically they will fill your tanks to about 3600 psi unless you ask
> them not to!) With the LP steel tanks, I like to use 300 bar DIN
> valves to take advantage of the extra threads. This is what most cave
> and tech divers that I know do as well.

> Another consideration depending on what part of the country you are in
> is that high pressure air fills may not be readily available. LP steel
> tanks make sense to me from that standpoint as well. Based on my
> admittedly limited experience, HP steel tanks are more common in some
> areas than others.

> It is my understanding that the US DOT (Department of Transportation)
> is responsible for the rules governing compressed gas cylinders that
> are transported on public roads, so scuba tanks used here are supposed
> to be US DOT spec.

> Best,

> Bob



> >Thanks,
> >  It seems that my dream of obtaining that 4350 psi (300 bar) fill will
not
> >come true here in the States.  It killed me to have to sell my tanks when
I
> >left the UK - they don't have the proper stamps on them.  They were Faber
> >tanks, I called the home office in Italy, here's what I was told - the
tanks
> >are identical from the UK and the US, they are just marked differently.
> >Man, I wanted in the worst way to bring those tanks with me, but I knew I
> >would have trouble getting them filled.

> >Mike



> >> Mike,

> >> 300 bar DIN valves are available here in the US, but are more commonly
> >> used by cave and tech divers than recreational divers. Almost any dive
> >> shop should be able to get them for you. Then of course there are all
> >> the well known mail-order sources in the US like Divers Supply,
> >> Northeast Scuba, Fifth Dimension, Leisure Pro, etc.

> >> I'm not sure about the UK, but here in the US there are LP (low
> >> pressure) and HP (high pressure) steel tanks available. LP tanks have
> >> a nominal fill pressure of 2640 psi or about 184 bar, and overfilling
> >> to 3200 to 3600 psi or so is common. HP steel tanks are more compact
> >> and have a working pressure of 3500 psi or about 232 bar I think. In
> >> the US, a 12 liter LP steel tank would be rated as having a capacity
> >> of 80 cubic feet I believe. I personally own and use Faber 15 and 17
> >> liter LP steel tanks (sold here as 95 and 108 cu ft) and use both 200
> >> and 300 bar DIN valves with them.

> >> Good luck,

> >> Bob



> >> >Can anyone tell me if 300 bar DIN valve tanks are available in the US
and
> >if
> >> >so, where can I get a couple?  I just came from the UK - they were
> >> >relatively easy to come by over there.  I'd like to get the equivalent
of
> >12
> >> >liter tanks if I could.

> >> >Mike

 
 
 

300 Bar DIN valve tanks

Post by Chuck Tribole » Sat, 22 Dec 2001 10:25:22

HP 80/100/120 tanks usually have 300 bar valves.
They are reasonably common in the rec community.
P

--
Chuck Tribolet

http://www.almaden.ibm.com/cs/people/triblet

Silicon Valley: Best day job in the world.

Quote:

> Mike,

> 300 bar DIN valves are available here in the US, but are more commonly
> used by cave and tech divers than recreational divers. Almost any dive
> shop should be able to get them for you. Then of course there are all
> the well known mail-order sources in the US like Divers Supply,
> Northeast Scuba, Fifth Dimension, Leisure Pro, etc.

> I'm not sure about the UK, but here in the US there are LP (low
> pressure) and HP (high pressure) steel tanks available. LP tanks have
> a nominal fill pressure of 2640 psi or about 184 bar, and overfilling
> to 3200 to 3600 psi or so is common. HP steel tanks are more compact
> and have a working pressure of 3500 psi or about 232 bar I think. In
> the US, a 12 liter LP steel tank would be rated as having a capacity
> of 80 cubic feet I believe. I personally own and use Faber 15 and 17
> liter LP steel tanks (sold here as 95 and 108 cu ft) and use both 200
> and 300 bar DIN valves with them.

> Good luck,

> Bob



> >Can anyone tell me if 300 bar DIN valve tanks are available in the US and if
> >so, where can I get a couple?  I just came from the UK - they were
> >relatively easy to come by over there.  I'd like to get the equivalent of 12
> >liter tanks if I could.

> >Mike

 
 
 

300 Bar DIN valve tanks

Post by Bob Rowlett » Sat, 22 Dec 2001 12:25:47

Thanks Chuck. I knew that I would hear from an HP tank fan. ;-)
When I was at Monterey a few years ago, I was impressed how HP steel
tanks were commonly used there. In other areas HP tanks are not as
common. Here in the Midwest I would say HP tanks border on rare, so
high pressure air fills are not always that easy to come by. I've also
been leading a sheltered life by*** around cave country so much,
since many cave divers use LP tanks.

Best,

Bob

On Thu, 20 Dec 2001 17:25:22 -0800, "Chuck Tribolet"

Quote:

>HP 80/100/120 tanks usually have 300 bar valves.
>They are reasonably common in the rec community.
>P

 
 
 

300 Bar DIN valve tanks

Post by Chuck Tribole » Sun, 23 Dec 2001 00:00:37

And even more common now.  I can't offhand think of a shop that
doesn't do HP fills.

--
Chuck Tribolet

http://SportToday.org/

Silicon Valley: Best day job in the world.

Quote:

> Thanks Chuck. I knew that I would hear from an HP tank fan. ;-)
> When I was at Monterey a few years ago, I was impressed how HP steel
> tanks were commonly used there. In other areas HP tanks are not as
> common. Here in the Midwest I would say HP tanks border on rare, so
> high pressure air fills are not always that easy to come by. I've also
> been leading a sheltered life by*** around cave country so much,
> since many cave divers use LP tanks.

> Best,

> Bob

> On Thu, 20 Dec 2001 17:25:22 -0800, "Chuck Tribolet"

> >HP 80/100/120 tanks usually have 300 bar valves.
> >They are reasonably common in the rec community.
> >P