Hydraulics...

"Pump Hydraulics"...

Static suction head (h_suct) is the difference in elevation between the suction liquid level and the centerline of the pump impeller, Static discharge head (h_d) is the difference in elevation between the discarge liquid level and the centerline of the pump impeller, Static head (H_stat) is the difference in elevation between the static discarge and static suction liquid levels, Manometric suction head is the suction gage reading measured at the suction nozzle of the pump referenced to the centerline of the pump impeller (h₃ minus suction velocity head), Manometric dischrage head is the dischrage gage reading measured at the discharge nozzle of the pump referenced to the centerline of the pump impeller (h₄ minus discharge velocity head plus h_d) and Friction and local losses are caused by the flow of fluid through the pipe system and by fittings and valves [also inlet (H_entr) and outlet], respectively (h₁ and h₂).

"Moody Diagram"...

Pump Characteristic Curves...

Pump manufacturers provide information on the performance of their pumps in the form of characteristic curves, commonly called pump curves. In most pump curves, the total dynamic head H in meters, the efficiency E in percent, and the power input P in kilowatts are plotted as ordinates against the capacity (flow rate) Q in cubic meters per second as the abscissa.

"Pump Characteristic Curves - 1"...
"Pump Characteristic Curves - 2"...

Wastewater Pumps...

Centrifugal pumps of nonclog design are commonly used. The selected pumps must have sufficient clearance to pass the solids without clogging. In some cases, submergible pumps having blades have been widely used especially at small plants.

"Sanitary and Storm Sewer Transfer Pump Station Detail"...