Ads 490 4 Inch Corrugated 90 Degree Snap Lock Elbow

Product Description

The ADVANCED DRAINAGE SYSTEMS 490 is a 90-degree corrugated elbow fitting designed for use in non-pressurized polyethylene drainage systems. Manufactured from high-density polyethylene (HDPE), it provides a directional transition in 4-inch single-wall corrugated drain pipe installations. The Snap-Lok connection system allows fast, secure engagement without adhesives or mechanical fasteners, maintaining a tight joint under soil load and ground movement. At 0.12 pounds, the fitting is lightweight and easy to handle in the field. Overall dimensions are 4.5 inches in length and 4.75 inches in both width and height, sized to seat flush against standard corrugated pipe couplings.

This elbow is suited for residential and light commercial subsurface water management applications. Common uses include stormwater conveyance, agricultural field drainage, foundation drainage, and lawn or landscape runoff control. The 90-degree angle allows installers to redirect pipe runs around obstacles or transition flow direction within a drainage network. It is installed by landscape contractors, irrigation technicians, and general tradespeople working with corrugated polyethylene drainage pipe systems.

Key Features

• 90-degree directional transition for corrugated polyethylene drain pipe systems
• Snap-Lok connection requires no adhesives or mechanical fasteners for engagement
• HDPE construction resists corrosion, soil chemicals, and biological degradation
• Lightweight at 0.12 pounds for easy handling and trench installation
• Sized for 4-inch pipe on both inlet and outlet (Side A: 4 inches, Side B: 4 inches)
• Suitable for non-pressurized stormwater, agricultural, and landscape drainage applications

Compatibility

Designed for use with 4-inch single-wall corrugated polyethylene drain pipe using a Snap-Lok style connection. Intended for non-pressurized subsurface drainage applications only.

Installation Notes

Installation is typically performed by landscape contractors or drainage technicians working in open trench conditions. Before beginning, confirm the drainage system is depressurized and free of flow. Align the corrugated ribs with the Snap-Lok fitting and press firmly until the connection seats fully — no solvents, clamps, or adhesives are required. Backfill should be placed carefully around the fitting to avoid angular stress on the joint during compaction.