FERNCO COUPLING - 4 X 3

Transitioning from 4" to 3", this Fernco flexible reducing coupling joins the two pipe sizes in one gasketed sleeve without hub fittings, solvent, or threading. Stainless steel band clamps lock each end of the elastomeric sleeve down, bridging the plastic, cast iron, steel, and copper pipe found in larger drain and sewer systems. The flexible body absorbs misalignment and settling, easing size changes on repair and retrofit work. For a watertight 4"-to-3" step-down, it is a fast, dependable connector.

Key Features:

• Reduces 4" to 3" -- Joins the two pipe sizes in one gasketed coupling without hub fittings.
• Joins Dissimilar Materials -- Seals plastic, cast iron, steel, and copper pipe together.
• Stainless Band Clamps -- Clamps lock each pipe end down for a secure, watertight joint.
• Absorbs Misalignment -- Flexible sleeve tolerates offset and settling in the run.
• No Solvent or Threads -- Push-on install with a nut driver -- no glue, heat, or threading.

Where to Use:

• Rough plumbing -- Joining and repairing DWV, drain, and sewer pipe on new and retrofit work.
• Building maintenance -- Splicing in repairs and connecting dissimilar pipe without hub fittings.
• Drain & waste repair -- Making fast, gasketed connections in below-grade and in-wall drain lines.