Schedule 40 PVC reducer couplings are fittings that will connect two different sizes of pipe. These couplings are used in piping systems so that flow is not restricted in the system. Reducer couplings are preferred over reducer bushings, for this reason, a reducer bushing is glued inside a fitting and the reduction is sudden therefore restricting flow in the pipeline. Reducer couplings are conical in shape and help with flow maintenance in the pipeline. If you don't see the product you are looking for on our site, please use our Contact Form.