Another useful one.
Metric tanks are usually given in litres and bar.
232 bar is standard low pressure (a-clamp) and the most common, 300 bar is less common.
People generally use 12 litre or 15 litre tanks
The water capacity multiplied by pressure is the amount of air in a tank in litres.
Example 15l x 232 = 3480 litres of air.
SACs are expressed in surface litres per minute with a heavy breather taking around 25l/min.
So for above example a hoover would take 139 minutes to drain that tank at sea level and as roughly 10m == 1atm you can easily work out the air drain at other depths.
Metric tanks are usually given in litres and bar.
232 bar is standard low pressure (a-clamp) and the most common, 300 bar is less common.
People generally use 12 litre or 15 litre tanks
The water capacity multiplied by pressure is the amount of air in a tank in litres.
Example 15l x 232 = 3480 litres of air.
SACs are expressed in surface litres per minute with a heavy breather taking around 25l/min.
So for above example a hoover would take 139 minutes to drain that tank at sea level and as roughly 10m == 1atm you can easily work out the air drain at other depths.