This Charlotte Pipe 4 in. x 2 in. Schedule 40 PVC DWV coupling is a reducing coupling, used to join a 4-inch DWV pipe to a 2-inch DWV pipe in a non-pressure drainage system. It’s designed for drain, waste, and vent applications where you need a clean size transition between two pipe diameters.

• 4 in. x 2 in. hub x hub design connects different pipe sizes in one fitting
• Used for DWV (drain, waste, vent) systems only — not pressure lines
• Made from Schedule 40 PVC, designed for long-lasting drainage use