Bernoulli Theorem for Head Loss:
Bernoulli Theorem for Head Loss:

where,
h
L = Head Loss,
Z
1 = Static Head or Elevation at Point 1,
Z
2 = Static Head or Elevation at Point 2,
P
1 = Pressure at Point 1,
P
2 = Pressure at Point 2,
V
1 = Velocity at Point 1,
V
2 = Velocity at Point 2,
ρ = Density,
g = Acceleration of Gravity.