Whenever there is flow through an orifice, there is a power consumption (or loss) which is a function of the pressure drop and the flow rate. The following data is useful in calculating the hydraulic power requirements of a system.
The hydraulic power can also be expressed in another convenient form.
Since 1 H.P. = 746 watts, the above formula can be:
The nomogram on the opposite page shows this relationship.
A Lee IMH Chek Valve with 400 Lohms will flow 0.35 GPM at 50 psid. At those conditions, what horsepower is lost?