pressure rating up to 40 mm will be 20 bars and higher sizes it will be reduced as PN-15.
The ideal pressure setting for brewing a 15 bar or 20 bar espresso is typically around 9 bars.
250 bars
53 feet = 16.154 4 meterthe water pressure at 16.154 4 meters = 1.61544 bars + 1 bar of atmospheric pressure makes the absolute pressure = 2.62 bars.
15 million
Pressure is measured in PSI (pounds per square inch) or bars
Pressure is usually measures and calibrated in "bars".
1 bar is atmospheric pressure, or 15psi. 4 bar (not "bars") would therefore be 60psi.
720 Granola bars in 9 minutes720/9 = 80 Granola bars in one minute80 * 15 = 1200 Granola bars in fifteen minutes.
You question is not clear, but I think you mean to ask how deep in water is a pressure of 20 Bars. A bar is one atmosphere pressure which is about 10 meters of water depth. Since water is incompressible, the relationship is linear. 20 Bars is 200 meters depth.
In water, every 10 meters you go down, the pressure increases by 1 bar, approximately. To this you must add the air pressure, which is also approximately 1 bar (depending on whether you want gauge pressure or absolute pressure).
36 pound per square inches is equivalent to 2.48 bars (2.5 bars)