Yes pressure is pressure
Pressure doesn't change when you change substance, 120 PSI in water equals 120 PSI in air.
The 'standard' air pressure is 14 psi.
factory air pressure norm is 80 psi
PSI
14.7 Psi
In an FMVSS121 compliant air brake system, cut out pressure is between 115 - 130 psi, with a cut-in pressure of no more than 25 psi below cut-out pressure. The 90 psi figure is what the brake chambers are regulated at, not the entire system.
Cut out pressure is between 115 and 130 psi... cut in pressure is no more than 25 psi below the cut out pressure.
If it is fresh water, and the surface is at sea level, then the pressure at the surface is 14.69 psi. As you submerge, then the pressure from the weight of the water above you is added to the air pressure above the water. For each foot that you descend, the water pressure will increase by 0.4331 psi, so at 328 feet deep, the water pressure is 142.0568 psi. Add the 14.69 psi air pressure to get 156.7468 psi.
psi is air pressure per square inch normally for your tyres
The atmospheric pressure at the level of the Dead Sea is approximately 15.47 PSI.
7.5 PSI.