PVC Conduit and Fittings
PVC stands for Poly Vinyl Chloride - the chemical compounds that make up plastic. PVC conduit (pipe) houses electrical cable and usually is used for underground electrical systems.
PVC fittings, such as a bend, coupling, cross, elbow, reducer, tee, union, etc usually are standardized and used for joining two or more sections of pipe together.
PVC also is used for accessories such as a bushing, coupling, locknut, or other part of an electric wiring system that is intended to perform a mechanical rather than an electrical function.