Term 'Low Pressure'

[Down-under]

What pressure does USA mean when low pressure is used?
Is it 3000psi or 2250psi?

 

[ianr33]

Presuming you are talking about tanks,low pressure on a steel tank is 2400psi. With a plus on the hydro stamp they can be "legally" filled to 2640.

 

[Doubler]

In the Navy I was taught that low pressure air is 100 psi and lower. A 3000 or 2250 psi tank is a high pressure vessel that is rated to those pressures by manufacturing process, hydrostatic testing and material used.

 

[captain]

Referring to scuba cylinders I would consider 3000 psi and lower as low pressure.

 

[Scared Silly]

For me:

LP 2640 and below
MP 2700 - 3300
HP 3300 +

 

[Down-under]

Sorry, yes I am referring to dive cylinders.
So 2400psi is low pressure.
Then we have 220 bar and 300bar. I take it 300 bar is high pressure, then 220 bar is normal?
Just trying to figure out on EBAY the different reference to advertised tanks and manifold valves etc.

 

[Kern]

Sorry, yes I am referring to dive cylinders.
So 2400psi is low pressure.
Then we have 220 bar and 300bar. I take it 300 bar is high pressure, then 220 bar is normal?
Just trying to figure out on EBAY the different reference to advertised tanks and manifold valves etc.

Most steel tanks in Oz are rated at 232 bar, or 300 bar.

232 bar = 3,365psi; 300 bar = 4,350psi

I think 232 bar can be considered high pressure from a US stand point.

 

[squid509]

In the Navy I was taught that low pressure air is 100 psi and lower. A 3000 or 2250 psi tank is a high pressure vessel that is rated to those pressures by manufacturing process, hydrostatic testing and material used.

the navy considers 1000# and lower as low pressure but that has nothing to do with diving