When dealing with fans, 1 psig will support how many inches of water column?

The relationship between pressure and liquid columns can be established through specific conversions. One psi (pound per square inch) corresponds to a vertical column of water approximately 27.7 inches in height. This conversion is derived from the physical properties of water and the definition of psi as a unit of pressure.

To put it simply, psi measures pressure in terms of a force exerted by a column of liquid, and the density of water plays a crucial role in determining how high that column can be. Since water has a specific weight and density, we can calculate that 1 psi will support a column of about 27.7 inches of water. This is particularly relevant in applications like fan systems where pressures are monitored and calculated in terms of water column measurements.

Thus, understanding these conversions is essential for millwrights and other professionals who work with systems that involve hydraulic or pneumatic pressures.