Our Sch 80 CPVC bushings are flush style – meaning they are designed to take up as little space as possible in the pipe line. The idea is to have the bushing line up “flush” with the end of the fitting it is reducing (bushings do add additional length to the joint).
CPVC bushings come in a range of sizes. The larger size (indicated in the name) is the size of the fitting you need to reduce. The smaller size is the size you need to reduce down to. As with any reductions in pipe size, be sure you take into account how your media will flow and the affects on pressure a reduction in pipe size will cause.