Advanced Drainage Systems 314 Aa Hdpe Reducing Coupling 4x3

Product Description

The ADVANCED DRAINAGE SYSTEMS 314 AA is a single-wall corrugated HDPE reducing coupling designed to transition between 4-inch and 3-inch corrugated drainage pipe. This fitting connects two different pipe diameters within a single-wall corrugated drainage system, maintaining flow continuity where pipe sizing changes. High-density polyethylene construction provides resistance to corrosion, soil chemicals, and moisture. Plumbers and drainage contractors install this coupling in residential and light commercial subsurface drainage applications where a reduction in pipe diameter is required at a junction point.

This coupling is suited for storm drainage, yard drainage, and foundation drainage systems that use single-wall corrugated HDPE pipe. It is typically installed in-trench as part of a gravity-flow drainage network. The 4-inch to 3-inch reduction makes it appropriate for transitions from main drainage runs to smaller lateral lines or outlet connections.

Key Features

• Reduces from 4-inch corrugated pipe to 3-inch corrugated pipe in a single fitting
• Single-wall corrugated HDPE construction for lightweight handling and corrosion resistance
• Designed for gravity-flow subsurface drainage applications
• Snap-fit or sleeve-style connection compatible with standard single-wall corrugated pipe profiles

Compatibility

Designed as an OEM-style fitting for use with standard single-wall corrugated HDPE drainage pipe in 4-inch and 3-inch diameters.

Installation Notes

Installation is typically performed by a licensed plumber or drainage contractor in accordance with local plumbing codes and IPC guidelines. Ensure the trench is properly graded before securing the coupling to maintain the designed flow slope. Confirm both pipe ends are clean and free of debris before seating the coupling. Do not use this fitting with double-wall or solid-wall pipe profiles.

Technical Specifications

• Inlet Diameter: 4 inches
• Outlet Diameter: 3 inches
• Material: High-Density Polyethylene (HDPE)
• Pipe Wall Type: Single-Wall Corrugated
• Order Increment: 1

Standard Information

• Brand: ADVANCED DRAINAGE SYSTEMS
• Manufacturer Part Number: 314 AA