Advanced Drainage Systems 490 Aa 4 in Hdpe Snap 90 Elbow

Product Description

The ADVANCED DRAINAGE SYSTEMS 490 AA is a 4-inch single-wall corrugated HDPE snap-fit 90-degree elbow designed for residential and commercial stormwater drainage and yard drainage applications. The snap-together connection eliminates the need for separate couplers or adhesives, making field assembly fast and straightforward. Constructed from high-density polyethylene (HDPE), the fitting resists corrosion, soil chemicals, and moisture over the long term. Plumbers, drainage contractors, and site work crews use this elbow to make direction changes in corrugated drainage pipe runs without cutting or fabricating custom transitions.

This elbow is suited for surface and subsurface drainage systems where 4-inch single-wall corrugated pipe is used. Typical applications include downspout discharge runs, foundation drain tie-ins, french drain headers, and lawn drainage channels. The snap-fit design is particularly useful in tight trenches where toolless assembly saves time. It is not intended for pressure pipe systems or pressurized sanitary sewer service.

Key Features

• 4-inch nominal pipe size matches standard single-wall corrugated HDPE drainage pipe
• Snap-fit connection requires no adhesive, solvent, or separate coupler
• 90-degree elbow provides a clean right-angle direction change in drainage runs
• HDPE construction resists corrosion, root intrusion, and soil chemical exposure
• Single-wall corrugated profile keeps the fitting lightweight for easy handling in the field

Compatibility

Designed for use with 4-inch single-wall corrugated HDPE drainage pipe in non-pressure stormwater and yard drainage applications.

Installation Notes

Installation is typically performed by plumbers, drainage contractors, or site utility crews following local stormwater and drainage codes. Ensure the pipe trench is free of standing water and the pipe ends are clean before snapping the elbow into place. Confirm the snap connection is fully seated before backfilling. This fitting is not rated for pressurized systems and should not be used for sanitary drain, waste, or vent applications.

Technical Specifications

• Pipe Size: 4 inches
• Connection Type: Snap-fit
• Fitting Angle: 90 degrees
• Wall Type: Single-wall corrugated
• Material: High-density polyethylene (HDPE)
• Order Increment: 1

Standard Information

• Brand: ADVANCED DRAINAGE SYSTEMS
• Manufacturer Part Number: 490 AA