Advanced Drainage Systems 421 Aa 4 in Hdpe Snap Tee

Product Description

The ADVANCED DRAINAGE SYSTEMS 421 AA is a 4-inch single-wall corrugated HDPE snap tee designed for residential and commercial drainage applications. This fitting connects branch lines to main drainage runs using a tool-free snap-in installation method. The corrugated HDPE construction provides flexibility and resistance to soil movement, making it well suited for subsurface drainage systems. Plumbers and drainage contractors install this fitting as part of stormwater management, foundation drainage, and agricultural runoff systems. The snap-fit design reduces labor time on the job site by eliminating the need for adhesives or mechanical fasteners.

This snap tee is used in single-wall corrugated drainage pipe systems typically installed below grade. Common applications include yard drainage, French drain installations, downspout tie-ins, and perimeter foundation drainage. The 4-inch size is one of the most widely used dimensions in residential and light commercial drainage layouts. This fitting is appropriate for gravity-flow drainage lines where a branch connection is required.

Key Features

• 4-inch diameter compatible with single-wall corrugated HDPE pipe
• Snap-fit connection requires no adhesives or mechanical fasteners
• HDPE material resists corrosion, chemicals, and soil movement
• Corrugated profile provides flexibility for below-grade installation
• Tee configuration allows branch connections in drainage runs

Compatibility

Designed as an OEM-style replacement fitting for 4-inch single-wall corrugated HDPE drainage pipe systems used in residential and light commercial subsurface drainage applications.

Installation Notes

Installation is typically performed by plumbers or drainage contractors working on subsurface drainage systems. Ensure the main pipe run is clear of debris and properly bedded before seating the snap tee. The snap-fit connection should be fully seated and audible before backfilling. Follow local plumbing codes and manufacturer guidelines for burial depth and bedding material requirements.

Technical Specifications

• Pipe Diameter: 4 inches
• Material: HDPE (High-Density Polyethylene)
• Wall Type: Single-Wall Corrugated
• Fitting Type: Snap Tee
• Order Increment: 1

Standard Information

• Brand: ADVANCED DRAINAGE SYSTEMS
• Manufacturer Part Number: 421 AA