Module 7: Energy conservation
  Lecture 24: Examples on Bernoulli equation
 
 

All it implies is that K-factor is required to calculate minor-losses:

  K
Entrance      0.5
Exit        1.0
Gate value (half open)         2.7
- bend                                0.95
Globe value (fully open)      6.9

Assume: valve at (b) is a gate-valve (half open) and that at (e) is a globe–valve (fully open))

Apply BE :
(top-surface of water level; it is nearly stationary)
= shaft work
= viscous – loss = Minor loss + major loss
Minor–loss =
(Note:  is the same for all fittings)
(assume that the pipe–size is the same for suction and discharge segments)