Flexible DWV Coupling 4" x 4"

Bring reliability and flexibility to your drain, waste, and vent (DWV) installations with this robust 4" × 4" coupling. Crafted from high-quality elastomeric PVC, it provides a secure, leak-proof connection for various pipe materials without the need for primers or solvents. Two stainless steel bands tighten down for a mechanical seal that resists corrosion, sewer gases, and ground movement—ideal for both residential and light commercial plumbing.

Engineered to accommodate slight misalignments and thermal expansion, this coupling makes installations quicker and more forgiving. Whether you’re connecting PVC to cast iron or HDPE to steel, its versatile design ensures a watertight joint that stands up to the demands of underground and above-ground DWV systems.

Key Features

• Elastomeric PVC construction for chemical and sewer-gas resistance
• 4" × 4" fitting size, ideal for matching same-diameter pipes
• Two 300-series stainless steel clamps for a durable mechanical seal
• Rated for up to 4.3 psi working pressure and 120 °F
• Lead-free, UV-resistant and suitable for underground use
• Accommodates pipe ODs from 4.10" to 4.65" for flexible fitting
• No-mess installation—no glues or primers required
• Connects PVC, ABS, CPVC, HDPE, cast iron, copper, steel, and lead pipes

⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.