Reducer is a kind of fitting that be used for reducing piping size. There are 2 types reducer as follows:
a. Concentric reducer: have a central axis (centerline) of the section between the large and small.
b. Eccentric reducer: the central axis has a different (offset) between a large section and small.
Concentric reducer is most commonly used and often eccentric reducer used in piping in about pump and piperack area.