Genova Products 30175 PVC Reducing Coupling, 3/4 x 1/2" Go to amazon.com Related posts Top recommendation for pvc coupling 1/2 FeaturePVC reducing couplingUsed to reduce or enlarge pipe sizedPVC Schedule 40 pressure fittings DescriptionPVC reducing coupling; Used to reduce or enlarge pipe sized; PVC Schedule 40 pressure fittings. Manufactured in United States.