What is major minor losses in a flow through pipe?

Losses due to the local disturbances of the flow in the conduits such as changes in

cross section, projecting gaskets, elbows, valves and similar items are called minor

losses. In other Words, the losses that occur in pipelines due to bends, elbows, joints, valves, etc. are sometimes called minor losses.In case of a very long pipe, these losses are usually insignificant in

comparison to the fluid friction in the length considered. But In case of short pipes,

these minor losses may actually be major losses such as in suction pipe of a pump

with strainer and foot valves.