Couplings | Compression Coupling | Plug | Reducer Coupling | PVC 40 | 1-1/2" x 3/4" | 1-1/2" | 1" x 3/4" | 1" x 3/8" | 2-1/2" x 1-1/4" | 3" x 1/2" | 4" x 1-1/2" | 4" x 2"