Ipex 400pec Pvc Expansion Coupling 4 Inch

Product Description

The IPEX 400pec is a 4-inch, 2-piece PVC expansion coupling designed to accommodate axial pipe movement in drainage and plumbing systems. This fitting allows pipes to expand and contract without stressing joints or cracking adjacent pipe runs. Made from PVC, it handles typical installation conditions in both residential and light commercial applications. Licensed plumbers and pipefitters install this coupling where thermal cycling or building settlement creates longitudinal movement along the pipe. With a maximum expansion of 6 inches, it provides reliable service in long pipe runs that require built-in movement compensation.

The 400pec is suited for use in drain, waste, and vent systems where standard rigid couplings cannot absorb pipe movement. It is commonly installed in above-grade interior runs, underground applications with soil settlement potential, and mechanical room configurations where pipe routing spans structural expansion joints. Its 2-piece construction simplifies installation on existing pipe without requiring full pipe-end access.

Key Features

• Accommodates up to 6 inches of axial pipe expansion and contraction
• 2-piece design allows installation on in-place pipe runs
• PVC construction resists corrosion and chemical degradation in DWV service
• 4-inch trade size fits standard 4-inch PVC pipe schedule
• Reduces stress on adjacent fittings and joints during thermal cycling

Compatibility

Designed as an OEM-style replacement and standard-fit coupling for 4-inch PVC drain, waste, and vent piping systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable IPC or local plumbing code requirements. Shut off all flow in the affected pipe run before beginning work. Ensure the coupling is aligned with the direction of anticipated movement and that both pipe ends are deburred and cleaned prior to assembly. Do not use solvent cement on the sliding sleeve section, as it must remain free to move.

Technical Specifications

• Material: PVC
• Trade Size: 4 inches
• Type: 2-Piece
• Maximum Expansion: 6 inches

Standard Information

• Brand: IPEX
• Manufacturer Part Number: 400pec