Fernco 1056-33 3 Inch Flexible Pvc Clamp Coupling

Product Description

The FERNCO 1056-33 3" is a flexible PVC clamp coupling designed to join, repair, or transition pipe sections in drain, waste, and vent (DWV) plumbing systems. The coupling uses a flexible elastomeric sleeve with stainless steel clamps to create a leak-proof seal across a range of pipe materials and outside diameters. Plumbers and pipefitters install this coupling in both residential and light commercial applications where a rigid joint is impractical or where pipe materials differ. The part number, size, and compatible pipe materials are marked directly on the coupling for quick field identification.

This coupling is suited for use in drain, waste, and vent lines where pipe repairs, extensions, or material transitions are required. It accommodates 3-inch pipe connections and is commonly installed in below-grade, in-wall, and crawlspace plumbing runs. The flexible design allows for minor misalignment and makes installation straightforward in tight or confined spaces without the need for solvent welding or specialized fittings.

Key Features

• Flexible elastomeric sleeve creates a leak-proof seal on a variety of pipe materials
• Stainless steel clamps provide secure, corrosion-resistant clamping force
• Part number, size, and compatible pipe material markings on the body for easy field identification
• Accommodates minor pipe misalignment without requiring rigid alignment
• No solvent cement required — mechanical installation only

Compatibility

Designed as an OEM-style replacement and repair coupling for 3-inch DWV pipe systems. Suitable for connecting or transitioning between common pipe materials typically found in residential and commercial plumbing drain, waste, and vent lines.

Installation Notes

Installation is performed by licensed plumbers or experienced pipefitters in accordance with applicable plumbing codes such as the IPC or UPC. Shut off water flow and relieve system pressure before cutting into any active line. Position the coupling sleeve over the pipe ends, ensure the pipe ends are clean and free of burrs, then tighten the stainless steel clamps to the sleeve evenly. Do not overtighten clamps, as this can deform the sleeve and compromise the seal.

Technical Specifications

• Pipe Size: 3 inches
• Material: Flexible PVC sleeve with stainless steel clamps
• Case Pack Quantity: 40 units
• Overall Case Dimensions: 17.75 x 13.50 x 16.75 inches

Standard Information

• Brand: FERNCO
• Manufacturer Part Number: 1056-33 3"