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The NDS 311C is a 10-inch round professional-grade irrigation control valve lid designed to cover in-ground valve boxes in landscape and irrigation applications. Finished in green to blend with turf and planted areas, this lid provides a clean, secure closure for valve access points. It is sized for professional-grade round valve box installations and is built to withstand foot traffic and outdoor exposure. Irrigation technicians and landscape contractors typically specify this lid as a direct cover component in residential and light commercial irrigation systems.
This lid fits NDS round professional-series valve boxes commonly installed in residential lawns, commercial landscapes, and athletic turf applications. It is well suited for installations where a flush or low-profile cover is needed over a buried irrigation control valve assembly. The green color coordinates with standard turf environments and reduces visibility at grade level. Installers working in HOA, municipal, or commercial landscape maintenance will find this lid appropriate for standard valve box replacement or new installation work.
Designed as an OEM-style replacement or new-installation lid for NDS 10-inch round professional-series irrigation valve boxes. No additional compatible model numbers were specified in the product data.
This lid is installed by irrigation technicians or landscape professionals as part of an in-ground valve box assembly. Before servicing the valve box, shut off the irrigation system and relieve any line pressure. The lid should seat flush with or slightly above grade to allow easy access during routine maintenance. Follow local irrigation and landscape codes for proper valve box depth and cover requirements.
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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