Midland Industries 970818 No-hub Coupling 12 in

Product Description

The MIDLAND INDUSTRIES 970818 is a 12-inch no-hub coupling designed to join cast iron drain, waste, and vent pipe without hub ends. It uses a rubber sleeve and a 316 stainless steel shield with band clamps to create a secure, leak-resistant connection. Rated to 4.3 psi and suitable for temperatures from -30 degrees F to 140 degrees F, this coupling handles standard residential and commercial DWV service conditions. Licensed plumbers and pipefitters install this fitting during new construction or repair work on no-hub cast iron piping systems.

This coupling is used in drain, waste, and vent piping applications where no-hub cast iron pipe sections need to be joined or repaired. It is commonly installed in below-grade, in-wall, and under-slab configurations in both residential and commercial buildings. The 12-inch size serves large-diameter main drain lines, building sewers, and similar high-flow DWV runs. Its flexible rubber sleeve accommodates minor pipe misalignment and slight variations in pipe outside diameter.

Key Features

• 12-inch no-hub connection on both ends for same-size pipe joining
• 316 stainless steel shield provides corrosion resistance in wet and underground environments
• Rubber sleeve accommodates minor misalignment and outside-diameter variation
• Rated to 4.3 psi for standard DWV service pressure requirements
• Temperature range of -30 degrees F to 140 degrees F suits a wide range of install conditions
• Standard installation torque of 60 in-lb for consistent, repeatable band clamp tightening

Compatibility

Designed as an OEM-style no-hub coupling for 12-inch cast iron no-hub drain, waste, and vent pipe systems following standard no-hub pipe outside diameter specifications.

Installation Notes

Installation is performed by a licensed plumber in accordance with applicable plumbing codes such as the IPC or local adopted equivalents. Shut off water flow and confirm the pipe is depressurized before beginning. Slide the rubber sleeve over one pipe end, position the stainless steel shield, and tighten band clamps to the specified 60 in-lb torque using a torque-limiting driver or torque wrench to avoid overtightening. Inspect the sleeve for cuts or improper seating before final tightening.