Mission Rubber MR56 1212 Calder Coupling 12 Inches

Product Description

The MISSION RUBBER MR56 1212 is a 12-inch Calder-style shielded coupling designed to join plastic or cast iron pipe to plastic or cast iron pipe in no-hub drainage systems. This coupling provides a reliable, gasketed connection without requiring hub ends, making it a standard solution for drain, waste, and vent (DWV) piping transitions. At 6.38 pounds, it is sized for use in larger-diameter drain lines and is typically installed by licensed plumbers working on residential or commercial plumbing systems.

This coupling is suited for 12-inch diameter no-hub pipe connections in below-grade, above-grade, and in-wall DWV applications. It accommodates transitions between plastic pipe materials and cast iron, covering common field conditions where dissimilar pipe types must be joined. The Calder shielded design provides uniform compression around the pipe circumference for a secure, leak-resistant seal.

Key Features

• 12-inch diameter connection for large-bore DWV drain lines
• Joins plastic or cast iron pipe to plastic or cast iron pipe
• Calder shielded coupling design provides uniform gasket compression
• No-hub installation eliminates the need for hub-end pipe fittings
• Suited for drain, waste, and vent piping in residential and commercial systems

Compatibility

Designed as an OEM-style replacement and new-installation coupling for 12-inch no-hub plastic and cast iron DWV pipe systems.

Installation Notes

Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Shut off flow and drain the line before cutting into any existing drain system. Use a torque wrench calibrated to the coupling manufacturer's specified band-clamp torque range as marked on the hardware, and tighten clamps evenly. Inspect the neoprene gasket for proper seating before final tightening.

Technical Specifications

• Pipe Diameter: 12 inches
• Connection Type: Plastic or Cast Iron x Plastic or Cast Iron (No-Hub)
• Coupling Style: Calder Shielded
• Weight: 6.38 pounds
• UPC: 70288705690

Standard Information

• Brand: MISSION RUBBER
• Manufacturer Part Number: MR56 1212