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The NDS 311CR is a 10-inch round professional-grade lid designed for use with NDS drainage basins and valve boxes in reclaimed water systems. The purple color coding is the industry-standard identifier for reclaimed or recycled water lines, making it a required component on job sites where reclaimed water is distributed for irrigation or other non-potable uses. Licensed plumbers, irrigation contractors, and civil site crews install this lid as part of code-compliant reclaimed water infrastructure. At 1.31 pounds, it is lightweight enough for quick installation while maintaining a professional fit and finish over the access point.
This lid is suited for residential and commercial irrigation systems, municipal reclaimed water distribution, and any application where access covers must visually distinguish non-potable reclaimed water from potable water lines. The purple color meets common utility color-coding standards used by municipalities and water districts across the United States. It is typically installed at grade level to provide access to valves, meters, or junctions within the drainage or irrigation system.
Designed as an OEM-style replacement or upgrade lid for 10-inch round NDS professional drainage basins and valve boxes used in reclaimed water applications.
Installation is typically performed by licensed plumbers or irrigation contractors working on reclaimed water distribution systems. Confirm the basin or valve box opening measures 10 inches round before installation to ensure proper seating. Follow all applicable local codes and utility authority requirements for reclaimed water system identification, including color-coding standards. No special tools are required for lid placement, but verify the lid seats flush and secure before backfilling or finishing grade.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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