Mifab HD-22 No Hub Coupling 2 Inches Heavy Duty

Product Description

The MIFAB HD-22 is a heavy-duty no hub coupling designed for joining no-hub cast iron soil pipe and fittings in drain, waste, and vent (DWV) piping systems. The coupling uses a stainless steel shield and tightening bands to compress a neoprene gasket around the pipe ends, creating a leak-resistant mechanical joint without the need for solder, glue, or threading. Sized for 2-inch pipe, it is installed by licensed plumbers in both new construction and repair applications where a secure, code-compliant underground or above-grade DWV connection is required.

The HD-22 is suited for residential and light commercial plumbing installations where 2-inch no-hub cast iron pipe is used in sanitary drain, waste, and vent configurations. It is commonly used when coupling cast iron pipe to cast iron pipe or when transitioning between sections in tight spaces where a threaded or hubbed fitting is not practical. Heavy-duty construction makes it appropriate for installations subject to vibration, seismic movement requirements, or jurisdictions that require heavy-duty couplings by code.

Key Features

• Heavy-duty rating for use in demanding residential and commercial DWV applications
• Sized for 2-inch no-hub cast iron pipe
• No-hub design eliminates the need for threading, soldering, or adhesive bonding
• Stainless steel shield and band construction resists corrosion
• Neoprene gasket provides a leak-resistant compression seal
• Compact form factor supports installation in confined spaces

Compatibility

Designed as an OEM-style replacement and standard fitment coupling for 2-inch no-hub cast iron soil pipe and fittings in DWV piping systems.

Installation Notes

Installation is performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off the water supply and verify the pipe is drained before beginning work. Band clamps should be tightened with a torque-limiting screwdriver or nut driver to the coupling manufacturer specification — do not overtighten, as this can damage the gasket. Ensure pipe ends are clean, free of burrs, and fully seated against the gasket center stop before torquing the bands.

Technical Specifications

• Pipe Size: 2 inches
• Duty Rating: Heavy Duty
• Coupling Type: No Hub
• Weight: 0.5 pounds

Standard Information

• Brand: MIFAB
• Manufacturer Part Number: HD-22