NDS 420C Pop-Up Drainage Emitter – 3 in. & 4 in. Fittings, Up to 40 GPM

Overview

The NDS 420C Pop-Up Drainage Emitter is designed to move stormwater from grates, catch basins, channel drains, and other drainage components to a downstream discharge point. By integrating with standard 3‑inch and 4‑inch sewer and drain fittings, it fits neatly into a broader drainage system and helps redirect water away from structures and high‑risk landscapes. The cover is crafted from durable polyethylene to withstand outdoor conditions and lawn maintenance, making it a practical addition to many residential or commercial setups.

Key benefits

• Releases collected water up to 40 GPM, supporting effective drainage across varied landscapes.
• Designed to tolerate pedestrian traffic, including lawn tractors, when installed according to instructions.
• Outside flange helps prevent grass from growing over the cover, keeping access clear.

Design and safety features

• The cap pops up as water pressure increases (up to about 1 inch) and retracts as flow diminishes, providing a visible, controlled release.
• Flat profile design minimizes trip hazards and keeps the emitter flush to the ground, reducing exposure to lawn mower blades.
• When not in use, the emitter remains safely closed and unobtrusive in the landscape.

Durability and warranty

The unit includes a Polyethylene cover and ships with a single Pop-Up Drainage Emitter. NDS backs this product with a hassle-free limited lifetime warranty, underscoring a commitment to durability and reliability.

Compatibility and use cases

• Works with a complete drainage network to release collected runoff to a safe downstream discharge point, helping prevent costly water buildup.
• Connects to 3 in. and 4 in. sewer and drain fittings and can adapt to other pipe types with appropriate connectors.
• Ideal for use alongside catch basins and channel drains to manage stormwater near structures, erosion-prone zones, and poorly drained areas.

This emitter provides a practical, non‑guaranteed solution for redirecting stormwater and reducing landscape and property risk. Consider how it could integrate with your existing drainage plan to offer a consistent release path for excess water.