The pressure at the bottom of a column of water is about 1/2 psi per foot of height, so I would imagine that you would need about 5 or 6 feet of water head to achieve a pressure of 2.5 or 3 psi.

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Pressure is Pleasure: Compressed Air for the Custovation Shop. ... When spray painting always use a disposable water-separator attached to the gun air input to prevent any water to enter the gun.

Air compressor types. While there are compressors that use rotating impellers to generate air pressure, positive-displacement compressors are more common and include the models used by homeowners ...

[Ed] from Ed’s Systems, aka [Aussie50] took some time to demo his high pressure Frankenstein air compressor he stitched together from two refrigeration compressors. The two Danfoss SC15 ...

Best Overall DeWalt 3.7HP 175PSI 60 Gallon Vertical Single-Stage Stationary Air Compressor See It Best High-End California Air Tools CAT-60040CAD Ultra Quiet 60 Gal Compressor ...