Fernco P3000-44 Shielded Coupling, 4 In. Cast Iron To Plastic/steel

The Fernco P3000-44 is a shielded specialty coupling designed to connect 4-inch cast iron pipe to 4-inch plastic, steel, or extra-heavy cast iron pipe. This transition coupling solves a common plumbing challenge: joining different pipe materials securely without leaks or structural weakness. Whether you're renovating an older home with cast iron drainage, upgrading to modern plastic or steel piping, or working on commercial plumbing systems, this coupling provides a reliable solution for drain, waste, and vent (DWV) applications.

The Proflex shielded design resists shear forces—the pulling and twisting stress that weakens ordinary joints—while creating a rigid, long-lasting connection. This makes it well-suited for both residential and commercial plumbing work where secure, durable pipe connections are essential.

Features and Benefits

• Shielded Design: Resists shear forces to prevent joint failure and leaks caused by pipe stress and movement.
• Connects Multiple Materials: Joins cast iron, plastic, steel, and extra-heavy cast iron piping in drain, waste, and vent systems.
• Rigid, Durable Joint: Creates a long-lasting connection that maintains a secure seal.
• DWV Rated: Specifically engineered for drain, waste, and vent systems in residential and commercial buildings.
• Constructed to Endure: Built to maintain performance under harsh plumbing conditions.

Specifications

• Brand: Fernco
• Model: P3000-44
• Size: 4 inches
• Connects: Cast iron to plastic, steel, or extra-heavy cast iron
• Application: Drain, waste, and vent (DWV) systems
• Pressure Rating: 4.3 psi
• Schedule: 40 (PVC)