6 inch x 4 inch Strong Back Shielded Reducing Coupling Connect Clay to Cast Iron, PVC, Steel.Lead

1002-64RC Fernco Shielded Transition Coupling – 6 inch Clay to 4 inch CI/Plastic with Reinforced Shear Band

The Fernco 1002-64RC is a shielded transition coupling specifically engineered for connecting 6 inch clay pipe to 4 inch cast iron or plastic piping systems. Its reinforced strong back design incorporates a stainless steel shear band to maintain pipe alignment, absorb shear forces, and support structural integrity at transition points in gravity-flow drainage systems.

This coupling is suitable for use in both above- and below-grade DWV (drain, waste, vent) installations where dissimilar materials require a secure and code-compliant connection. The shielded design limits pipe deformation and minimizes joint movement, particularly in unstable soil conditions or high-traffic load areas.

Product Features and Functional Advantages

• ✅ Strong Back Design – Includes a 300-series stainless steel shear ring for enhanced resistance to shear loads and pipe settlement.
• ✅ Material Compatibility – Accommodates connections between 6 inch vitrified clay pipe and 4 inch cast iron (no-hub) or plastic (PVC or ABS) pipe systems.
• ✅ Shielded Construction – Outer stainless steel shield maintains shape integrity and evenly distributes clamping force, reducing the risk of leakage or misalignment.
• ✅ Flexible PVC Sleeve – Conforms to irregular surfaces and provides a watertight seal between pipe materials with differing outer diameters.

Specifications

• Model: 1002-64RC
• Size Range: 6 inch clay x 4 inch cast iron/plastic
• Materials: Elastomeric PVC (sleeve), Type 301 stainless steel (bands and shield)
• Standards: Complies with ASTM C1460, ASTM C1173, and CSA B602; UPC/IAPMO Listed

Installation Notes

Install using a calibrated torque wrench to tighten stainless steel clamps to manufacturer specifications (typically 60 in-lbs). Clean and deburr pipe ends prior to insertion. Ensure proper fitment and torque to meet local plumbing code requirements. Suitable for both retrofit and new construction conditions where system adaptability and material transitions are necessary.

Application Use

Commonly installed in municipal, residential, and commercial drainage infrastructure where existing clay systems are being connected to modern piping materials. Frequently used in sewer lateral replacements, rehabilitation projects, and manhole-to-pipe transitions in gravity-fed, non-pressurized systems.

Compliance Consideration

This coupling meets lead-free requirements and is approved for use in regulated jurisdictions. It provides a mechanical joining method without adhesives, flame, or solvents, making it suitable for trench and confined-space installations.

The 1002-64RC Fernco Coupling is a code-compliant, field-proven solution for difficult material transitions, offering durability, flexibility, and performance in structural DWV system design.