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

2" x 1-1/2" Fernco Flexible Banded Coupling – Transition Coupling for DWV and Non-Pressure Piping Systems

The Fernco 2" x 1-1/2" flexible banded coupling is a transition fitting designed for joining dissimilar pipe materials or nominal sizes in non-pressurized drainage, waste, and vent (DWV) systems. This coupling is constructed from elastomeric PVC and reinforced with corrosion-resistant stainless steel bands to maintain a mechanical seal between connected piping components.

It is engineered to accommodate minor pipe misalignments and differences in material outside diameters while maintaining a watertight and root-resistant joint. Suitable for use in aboveground or underground applications, the coupling is commonly used in repair work, system retrofits, or material transitions between cast iron, plastic (PVC/ABS), copper, and steel piping.

Product Specifications

• Size: 2" x 1-1/2" nominal
• Coupling Body: Elastomeric PVC (conforms to ASTM D5926)
• Clamps: Type 300 series stainless steel bands with 5/16" hex head screw
• Temperature Range: -30°F to 140°F (continuous service)
• Application: Non-pressure DWV systems; gravity-flow drainage
• Certification: UPC Listed; ASTM C1173 compliant

Common Applications

• Transition from 2" to 1-1/2" piping in drainage or vent systems
• Repairs and retrofits where rigid fittings cannot be used
• Connecting different materials (e.g., cast iron to PVC, steel to ABS)

Installation Guidelines

Ensure all pipe ends are clean and square-cut. The coupling should be centered over the joint and tightened uniformly using a torque wrench per manufacturer specifications (typically 60 in-lbs). Do not use in pressurized applications or potable water systems. For underground use, ensure the surrounding soil does not compromise clamp integrity or introduce shear loads without proper support.

Performance Notes

Banded couplings are designed to offer added shear resistance through stainless steel clamp reinforcement. Their flexibility permits installation in confined spaces or misaligned piping configurations while maintaining a durable, code-approved seal.

Summary

The 2" x 1-1/2" Fernco flexible banded coupling provides a secure, field-serviceable connection for non-pressure DWV transitions. It is especially useful in mixed-material systems and repair scenarios where traditional solvent-weld or hub-and-spigot methods are impractical or incompatible.