Mission Rubber 1804012 No-hub Coupling 4 Inch Cast Iron

Product Description

The MISSION RUBBER 1804012 is a standard lightweight no-hub coupling designed to join cast iron drainage pipe in residential and commercial drain, waste, and vent (DWV) systems. The 4-inch nominal size accommodates standard no-hub cast iron pipe ends, providing a secure, leak-resistant connection without the need for hubbed fittings or lead-and-oakum joints. Licensed plumbers and pipefitters install this coupling as part of underground or above-grade DWV rough-in work. Its lightweight construction simplifies handling in tight spaces and overhead installations while maintaining the structural integrity required for sanitary drainage applications.

This coupling is suited for connecting 4-inch nominal cast iron no-hub pipe sections in residential drain systems, commercial building drain and waste stacks, and sanitary sewer applications. The cast iron end style makes it appropriate for systems where standard no-hub pipe is the primary material. It is domestically manufactured, which is a common specification requirement on public works and municipal plumbing projects where country-of-origin documentation is required.

Key Features

• 4-inch nominal size for standard no-hub cast iron pipe
• Cast iron end style for use with no-hub cast iron DWV pipe
• Lightweight construction for easier handling in overhead and confined-space installs
• No-hub design eliminates the need for lead, oakum, or hubbed fittings
• Domestically manufactured to meet buy-domestic specification requirements

Compatibility

Designed as an OEM-style replacement and standard-service coupling for 4-inch nominal no-hub cast iron drain, waste, and vent pipe systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off all flow to the affected line and confirm the pipe ends are clean, properly aligned, and free of burrs or debris before positioning the coupling. Torque the clamp bands using a calibrated torque driver per the coupling manufacturer specifications printed on the product packaging. Do not overtighten, as this can distort the neoprene sleeve and compromise the seal.

Technical Specifications

• Nominal Size: 4 inches
• End Style: Cast Iron
• Coupling Type: Standard Lightweight No-Hub
• Country of Origin: Domestic

Standard Information

• Brand: MISSION RUBBER
• Manufacturer Part Number: 1804012