Fernco Inc. 3001-110 Shielded Coupling 1-1/2x1" trap

Shielded Coupling for 1-1/2 and 1 Inch Pipes

The Fernco 3001-110 is a shielded transition coupling built to join nominal pipe sizes of 1-1/2 inch and 1 inch. It is made from neoprene and carries the HAWA material designation. The coupling suits drainage installations where two different pipe diameters must be connected securely. It is intended for plumbers and maintenance teams working on residential or commercial waste lines.

Transition From Unshielded or Mismatched Fittings

This coupling replaces unshielded rubber sleeves or improvised reducer bushings that can leak or shift under ground movement. The integral stainless shield adds clamping strength and resists shear forces better than a plain flexible connector. The jump is worth it when the joint must pass inspection, handle slight misalignment, or endure backfill pressure without separating.

Verify Pipe Outside Diameters

Before ordering, confirm the actual outside diameters of both pipes match the coupling’s 1-1/2 inch and 1 inch nominal sizing. Check that neoprene is compatible with the waste stream chemistry and temperature in your system. Ensure local plumbing codes accept shielded transition couplings for the intended application and that no additional support or bedding is required.