concentric reducer

concentric reducer

[kən′sen·trik ri′dü·sər]
(engineering)
A threaded or butt-welded pipe fitting whose ends are of different sizes but are concentric about a common axis.
References in periodicals archive ?
Figure 9 shows meter results when the meter was installed downstream of double elbow combinations or a concentric reducer. Each individual test set was within the 0.2 percent reproducibility band for all but the lowest flow rate.