Mission Rubber 1406073 MR56 Arc Repair Coupling 6x4 in

Product Description

The MISSION RUBBER 1406073 is an adjustable shielded repair coupling in the MR56 ARC series, designed for field repair and transition of drain, waste, and vent (DWV) piping systems. It accommodates a 6 x 4 inch nominal pipe size and features a cast iron and plastic end style, making it suited for connecting or repairing dissimilar pipe materials in a single fitting. The shielded, adjustable design allows plumbers to achieve a secure, leak-resistant connection without cutting to an exact length. Measuring 6.45 inches in diameter and 6 inches in height, this domestic-manufactured coupling is a dependable choice for repair work in residential and commercial plumbing applications.

This coupling is intended for use in DWV piping repair scenarios where cast iron meets plastic pipe, a common situation in older residential buildings undergoing renovation or in commercial facilities with mixed piping infrastructure. Licensed plumbers and pipefitters install this fitting when a section of existing drain or vent line requires repair or when transitioning between pipe materials during a system upgrade. Its adjustable shielded construction accommodates minor length variations, reducing the need for precise pipe cutting in tight or difficult-access locations.

Key Features

• Adjustable shielded design accommodates minor pipe length variations for easier field repair
• Cast iron and plastic end style allows transition between dissimilar pipe materials
• 6 x 4 inch nominal size suits common DWV repair applications
• 6.45 inch diameter and 6 inch height provide substantial coupling coverage
• Domestic manufacture in the MR56 ARC series

Compatibility

Designed as an OEM-style repair coupling for DWV piping systems where cast iron and plastic pipe materials meet at a 6 x 4 inch nominal transition point.

Installation Notes

Installation is performed by a licensed plumber in accordance with applicable plumbing codes such as the IPC or local authority requirements. Before installation, shut off flow to the affected drain or vent line and ensure the pipe ends are clean, free of burrs, and properly aligned. Position the shielded coupling over the pipe ends, adjust to the correct span, and tighten the clamps evenly to achieve a uniform seal. Do not overtighten clamps on plastic pipe ends without following the manufacturer torque guidance on the coupling hardware itself.