I know that velocity pressure can be calculated from dynamic pressure according to the potential energy of pressure (from Bernoulli's equation):
$$ P = \frac{1}{2} \rho \overline{V}^2 $$
where P = dynamic pressure in Pascals, rho = density in kg/m^3, and V = velocity in m/s.
Solving for velocity gives:
$$ \overline{V} = \sqrt[]{\frac{2P}{\rho}} $$
I also believe that an equivalent formula (from this source) is:
$$ \overline{V} = 1096.7 \sqrt[]{\frac{P}{\rho}} $$
where P = dynamic pressure in inches of water, rho = density in kb/ft^3, and V = velocity in ft/min.
How is the last equation derived from Bernoulli's equation? I have been unable to verify the constant 1096.7.