Fernco fernco-1006-64 Flexible Pipe Coupling 6 to 4 Inch

Product Description

The FERNCO fernco-1006-64 is a flexible pipe coupling designed to transition a 6-inch concrete pipe to a 4-inch pipe made of cast iron, PVC, copper, steel, or lead. It uses a flexible elastomeric sleeve to create a watertight, shear-resistant connection between dissimilar pipe materials and sizes. This type of coupling is a standard tool in drain, waste, and vent (DWV) repair and new construction, where pipes of different materials or diameters must be joined without solvent welding, threading, or hot work. Licensed plumbers install this coupling in residential and commercial applications alike.

This coupling is suited for below-grade, at-grade, and above-grade DWV installations where a 6-inch concrete line meets a 4-inch pipe run. Typical scenarios include sewer line repairs, service connections, and system upgrades where concrete mains or sleeves transition into cast iron branch lines or PVC drain runs. The coupling accommodates multiple pipe materials on the 4-inch end, making it a practical single-SKU solution for jobs involving mixed pipe systems.

Key Features

• Transitions 6-inch concrete pipe to 4-inch cast iron, PVC, copper, steel, or lead pipe
• Flexible elastomeric sleeve absorbs minor pipe misalignment and ground movement
• No solvent, heat, or threaded connection required for installation
• Compatible with multiple pipe materials on both inlet and outlet ends
• Suitable for DWV drain, waste, and vent applications

Compatibility

Designed to connect 6-inch concrete pipe to 4-inch cast iron, PVC, copper, steel, or lead pipe in DWV systems.

Installation Notes

Installation is typically performed by a licensed plumber. Shut off flow and relieve any pressure or drainage load on the line before beginning work. Slide the coupling sleeves over each pipe end, seat the gasket fully against each pipe, and tighten the stainless steel clamp bands evenly to manufacturer torque guidance. Follow applicable IPC and local plumbing code requirements for underground or concealed DWV connections.

Technical Specifications

• Inlet Size: 6 inches (concrete)
• Outlet Size: 4 inches (cast iron, PVC, copper, steel, lead)
• Application: DWV drain, waste, and vent
• Compatible Pipe Materials: Concrete, cast iron, PVC, copper, steel, lead

Standard Information

• Brand: FERNCO
• Manufacturer Part Number: fernco-1006-64