Reducers are usually concentric but eccentric reducers are used when required to maintain the same top-or bottom-of-pipe level.

A reducer can be used either as nozzle or as diffuser depending on the mach number of the flow.

A reducer allows for a change in pipe size to meet hydraulic flow requirements of the system, or to adapt to existing piping of a different size.

Concentric Reducer

In Concentric Reducer the reduction of the pipe size is achieved by decreasing the diameter of the ftting at a constant rate over a specified length, maintaining symmetry around the ftting. Concentric Reducers are used to join pipe or tube sections of different diameters on the same axis. They provide an in-line conical transition between pressurized pipes of differing diameters. Thus, concentric reducers connect pipes of unequal size but have a common centerline. The same ftting can be used in reverse as an concentric expander.

Eccentric Reducer

In Eccentric Reducer the reduction of the pipe size is achieved by decreasing the diameter of the ftting at a constant rate over a

specified length, maintaining one side of the ftting horizontally. An eccentric pipe reducer ftting is manufactured with the smaller

outlet off center to the larger end, which allows it to align with only one side of the inlet. The same fitting can be used in reverse

as an eccentric expander.