Fernco Inc P1056-415 Flexible Repair Coupling 4x1.5 in

Product Description

The FERNCO INC P1056-415 is a flexible repair coupling designed to connect 4-inch pipe to 1.5-inch pipe in drain, waste, and vent (DWV) systems. It is made from a specially formulated PVC compound that creates a positive, watertight seal on sewer and drain connections. Stainless steel clamps provide corrosion-resistant, rustproof clamping force around the coupling body. Plumbers and pipefitters install this fitting when transitioning between mismatched pipe diameters or repairing existing lines without full pipe replacement.

This coupling is suited for residential and light commercial plumbing applications where a 4-inch pipe must connect to a 1.5-inch pipe. It accepts both cast iron and plastic pipe materials on either end, making it a practical solution for repair work involving mixed pipe types. Typical use cases include branch connections, stack repairs, and drain line tie-ins where rigid couplings are not practical due to pipe misalignment or access constraints.

Key Features

• Connects 4-inch cast iron or plastic pipe to 1.5-inch cast iron or plastic pipe
• Specially formulated PVC compound provides a positive, watertight seal on sewer and drain lines
• Stainless steel clamps resist corrosion and rust for long service life
• Flexible construction accommodates minor misalignment and simplifies installation in tight spaces
• Sold as individual unit (EA); packaged in quantities of 10

Compatibility

Designed to connect 4-inch cast iron or plastic pipe to 1.5-inch cast iron or plastic pipe in DWV and sewer drain applications.

Installation Notes

Installation is typically performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off flow and ensure the line is depressurized and drained before beginning work. Clean pipe ends of debris, burrs, and old sealant before sliding the coupling into position and torquing the stainless steel clamps evenly. Do not overtighten the clamps, as excessive force can deform the PVC body and compromise the seal.