1-1/2 inch Flexible Banded Coupling Clay x Cast Iron PVC or Steel Pipe

1-1/2” Flexible Banded Coupling – Shielded Transition Fitting for DWV Systems

The 1-1/2” Flexible Banded Coupling is engineered for joining dissimilar piping materials in non-pressurized drainage, waste, and vent (DWV) applications. Constructed with a thermoplastic elastomer body and an external Type 300 stainless steel shear band, the coupling provides axial alignment and resistance to joint movement under load or soil shifts.

Designed for use in above-ground or underground settings, this fitting enables mechanical transitions between cast iron, PVC, ABS, clay, or galvanized steel pipe, even when minor diameter variances exist. Its shielded construction helps distribute clamping force evenly, ensuring long-term sealing integrity across the joint.

Performance Features

• ✅ Nominal Size: 1-1/2 inches
• ✅ Construction: Flexible elastomeric sleeve with full stainless steel outer band and twin clamp housings
• ✅ Connection Type: Plain-end to plain-end (no threading or solvent weld required)
• ✅ Sealing Method: Mechanical compression via torque-applied clamps (60 in-lbs typical)
• ✅ Compliance: Meets ASTM C1460, ASTM C1173, and CSA B602; UPC/IAPMO listed for DWV use

Installation Guidance

Ensure pipe ends are clean, square-cut, and free of burrs or contaminants. Slide the coupling over both pipe ends and center it at the joint. Torque stainless steel clamps to manufacturer specifications using a calibrated torque wrench. Verify compatibility of pipe O.D. ranges to ensure proper fit. No adhesives or solvents are required.

Common Applications

This coupling is frequently used in residential and commercial plumbing for retrofits, repairs, and new installations involving mixed-material transitions. It is suitable for vertical or horizontal lines in crawl spaces, basements, mechanical chases, or buried DWV layouts where access is limited and joint flexibility is beneficial.

Technical Note

Shielded couplings are required by many plumbing codes when connecting dissimilar materials below grade or where shear loads may be present. The external band minimizes joint deflection and supports structural continuity across the system.

The 1-1/2” Flexible Banded Coupling provides a mechanically robust, code-approved solution for connecting different pipe materials in gravity drainage systems. Its design supports field efficiency and long-term durability where rigid fittings are impractical or prohibited.