Submittal Sheet

Pump and system sizing instructions
Unilift CC, KP, AP
7
58
2. Total dynamic head
Dynamic head is expressed in feet of head (ft H
2
O).
Total dynamic head is a combination of static head and
friction loss:
A. Static head
The actual vertical distance of "lift" in feet from the
minimum water level in the basin to the highest point in
the discharge piping.
Fig. 55 Illustration of static head for an ejector basin with
pump and piping
B. Friction loss
Friction losses are caused by pumping the solids/
liquids through the various piping and fittings.
Every foot of pipe and every valve or fitting is rated for
various friction losses at a given rate of capacity
(GPM).
Use the figure above and the friction loss tables below
to determine the friction loss.
Table A
Friction losses for fittings (equivalent feet of piping):
Tm 043425 4408
Nominal pipe
diameter
90 ° elbow 45 ° elbow Tee (through-flow) Tee (branch-flow)
Swing check
valve
Gate valve
(open)
1.25" 3.5 1.8 2.3 6.9 11.5 0.9
1.5" 4.0 2.2 2.7 8.1 13.4 1.1
2" 5.2 2.8 3.5 10.3 17.2 1.4
2.5" 6.2 3.3 4.1 12.3 20.6 1.7
3" 7.7 4.1 5.1 15.3 25.5 2.0