Fernco fernco-nh33 No Hub Coupling 3 Inch

Product Description

The FERNCO fernco-nh33 is a standard-duty no-hub coupling designed to join 3-inch nominal no-hub cast iron pipe in drain, waste, and vent (DWV) systems. It features a patented shield design that maximizes pressure transfer from the clamps to the gasket and pipe, creating a secure, leak-resistant joint. This coupling eliminates the need for traditional hub-and-spigot connections, providing a faster and more reliable method for connecting cast iron pipe sections. Licensed plumbers and pipefitters install this fitting during new construction or repair work on cast iron DWV systems.

The fernco-nh33 is suited for residential and light commercial plumbing applications where no-hub cast iron pipe is used. Its standard-duty NH Series construction makes it appropriate for underground, in-slab, and above-grade cast iron drain and waste piping. The patented shield distributes clamp pressure evenly around the gasket, reducing the risk of gasket distortion and joint failure common with older hub-and-spigot configurations.

Key Features

• 3-inch nominal size fits standard no-hub cast iron pipe
• Patented shield design maximizes clamp-to-gasket pressure transfer
• Replaces hub-and-spigot connections with a more efficient no-hub joint
• Standard-duty NH Series construction for residential and light commercial use
• Domestic product meeting standard DWV plumbing requirements

Compatibility

Designed as an OEM-style replacement coupling for 3-inch nominal no-hub cast iron pipe used in residential and commercial DWV plumbing systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and ensure the pipe section is free of flow before beginning work. Align pipe ends squarely within the coupling gasket before tightening the clamp bands evenly to avoid gasket distortion. Do not overtighten clamp bands, as excess force can damage the gasket or pipe.

Technical Specifications

• Nominal Size: 3 inches
• Series: NH Series
• Duty Rating: Standard Duty
• Fitting Type: Coupling
• Country of Origin: Domestic
• UNSPSC Code: 31163000

Standard Information

• Brand: FERNCO
• Manufacturer Part Number: fernco-nh33