Mission Rubber 1803022 No-hub Coupling 3x2 in Cast Iron

Product Description

The MISSION RUBBER 1803022 is a standard lightweight no-hub coupling designed to join sections of cast iron no-hub pipe and fittings in drain, waste, and vent (DWV) systems. It provides a leak-resistant, shear-resistant connection without the need for a hub, making it a practical choice for new construction and retrofit plumbing installations. The coupling accommodates a nominal 3-inch pipe on one end and a nominal 2-inch pipe on the other, allowing transitions between two common DWV pipe sizes. Licensed plumbers and pipefitters are the primary installers of this type of fitting.

This coupling is suited for residential and light commercial DWV applications where cast iron no-hub pipe is specified. It is commonly installed in sanitary drain lines, waste stacks, and vent piping concealed in walls, floors, or chases. The reducer configuration makes it useful when transitioning from a larger branch line to a smaller pipe run, such as connecting a 3-inch stack to a 2-inch branch or vent. Domestic manufacture supports project specifications that require domestically produced plumbing materials.

Key Features

• No-hub design eliminates the need for a hub or solvent welding during installation
• Nominal 3 x 2 inch reducer configuration for common DWV size transitions
• Cast iron end style for compatibility with standard no-hub cast iron pipe and fittings
• Standard lightweight construction reduces overall system weight compared to heavy-duty couplings
• Domestically manufactured to support project material specifications

Compatibility

Designed as an OEM-style replacement and new-installation fitting for standard no-hub cast iron DWV piping systems with nominal 3-inch and 2-inch pipe ends.

Installation Notes

Installation of no-hub couplings should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off water supply and verify the pipe system is depressurized and drained before beginning work. Use a calibrated torque wrench to tighten the stainless steel clamp band to the torque value specified by the coupling manufacturer. Do not over-tighten, as this can distort the neoprene sleeve and compromise the seal.

Technical Specifications

• Nominal Size: 3 x 2 inches
• End Style: Cast Iron No-Hub
• Coupling Type: Standard Lightweight No-Hub
• Country of Origin: Domestic

Standard Information

• Brand: MISSION RUBBER
• Manufacturer Part Number: 1803022