Mission Rubber Company 622028g 4x2 No-hub Coupling

Product Description

The MISSION RUBBER COMPANY 622028g is a standard no-hub coupling designed to join cast iron drain, waste, and vent pipe in residential and commercial plumbing systems. This domestic-made flexible coupling connects a 4-inch pipe to a 2-inch pipe, making it a reducer-style fitting suited for transitions between different pipe diameters. No-hub couplings use a neoprene sleeve and stainless steel clamp band to create a secure, leak-resistant joint without the need for lead and oakum or solvent cement. Licensed plumbers install this fitting as part of DWV rough-in work or repair.

This coupling is appropriate for use in residential and light commercial drain, waste, and vent applications where a 4-inch to 2-inch pipe transition is required. It is listed as a domestic product, meaning it is manufactured in the United States. The 622028g is cross-referenced as a direct replacement for Ideal 622028G and Mission 1804020, making it a common retrofit and repair fitting for existing no-hub cast iron systems. It fits standard no-hub pipe conforming to CISPI and ASTM specifications.

Key Features

• Reducer-style no-hub coupling for 4-inch to 2-inch pipe transitions
• Flexible neoprene sleeve design accommodates minor misalignment and pipe movement
• Domestic manufacture for consistent quality and traceability
• Compatible with standard no-hub cast iron DWV pipe
• Cross-references Ideal 622028G and Mission 1804020

Compatibility

Cross-referenced as a replacement for Ideal 622028G and Mission 1804020. Designed for use with standard no-hub cast iron drain, waste, and vent pipe in 4-inch by 2-inch reducer configurations conforming to applicable CISPI and ASTM no-hub standards.

Installation Notes

Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Before installation, verify that both pipe ends are cut clean and square with no burrs or sharp edges that could damage the neoprene sleeve. Tighten the stainless steel clamp bands to the torque specification marked on the coupling band or as required by the fitting manufacturer. Always test the assembly for leaks before closing the wall or covering the rough-in.

Technical Specifications

• Pipe Size: 4 inches x 2 inches
• Coupling Type: Standard No-Hub Reducer
• Subcategory: Flexible Fittings
• Origin: Domestic
• UPC: 016846180202

Standard Information

• Brand: MISSION RUBBER COMPANY
• Manufacturer Part Number: 622028g