The Fernco 4" x 4" Socket to Pipe Flexible Coupling (Gray) is a reliable and easy-to-install solution for connecting 4-inch pipe sockets to plain-end pipes in drain, waste, and vent (DWV) systems. Designed for maximum compatibility and durability, this flexible coupling connects socket hubs to pipes made of PVC, cast iron, steel, or copper with a secure, watertight seal.

Made from high-grade elastomeric PVC and featuring stainless steel clamps, this Fernco coupling absorbs vibration and thermal expansion, making it ideal for both underground and above-ground installations. Its gray color identifies it for general plumbing use and ensures compliance with major plumbing codes.

Key Features:

• Fits 4" socket to 4" pipe connections

• Ideal for joining PVC hub fittings to pipe ends

• Gray flexible PVC resists chemicals, corrosion, and UV damage

• Stainless steel clamps provide a strong, leak-free seal

• Allows for movement and vibration without cracking

• Fast and easy installation — no special tools required

• Meets ASTM D5926, C1173, and CSA B602 standards