Internet #100153624

Model #422G

Store SKU #130487

4 in. Plastic Pop-up Drainage Emitter

  • Elbow connects to 4 in. sewer and drain pipe–no fitting necessary
  • Discharges collected water at a point of release downstream
  • Cover retracts securely to prevent entry of debris and rodents
  • See More Details

Frequently Bought Together


Product Overview

Drainage for Downspouts Problem and Solution

Drainage for downspouts

Use a Catch Basin and Downspout Defender Grate to move water away from your foundation

Drainage for Driveways Problem and Solution

Drainage for driveways

Install a Channel Drain to eliminate slippery surfaces and wet garages

Landscape Drainage Problem and Solution

Landscape drainage

An Atrium Grate will drain excess water that can kill plants

Example Downspout Runoff Solution

Downspout Runoff Solutions

Catch basins connect to drain pipe and Pop-Up Emitters to discharge water. Use Flo-Well and EZ Drain to increase capacity.

Example Driveway Drainage Solution

Driveway Drainage Solutions

Channel drains connect to drain pipe and Pop-Up Emitters to discharge water. Use Flo-Well and EZ Drain to increase capacity.

Example Landscape Drainage Solutions

Landscape Drainage Solutions

Atrium Grates connect to drain pipe and Pop-Up Emitters to discharge water. Use Flo-Well and EZ Drain to increase capacity.

Example Drainage Solutions for Yard

Drainage Solutions for Yard

Capture water with Flo-Well and move it away with pipe. A Pop-Up Emitter discharges the water to a safe area.

Catch Basin

Catch Basin

Catch Basins capture water from under downspouts, in planter areas and lawns

Channel Drain

Channel Drain

Channel Drains capture water from driveways, patios and pool and spa areas

Flo-Well Engineered Dry Well

Flo-Well Engineered Dry Well

Captures and temporarily stores water slowly releasing it into the ground to eliminate flooding

EZ Drain

EZ Drain

A pre-engineered French drain solution with integrated pipe that captures and redirects water

Pop-Up Emitter

Pop-Up Emitter

Installed downstream, it allows for the release of water to safe areas

America’s #1 Channel Drain and Catch Basin

America’s #1 Channel Drain and Catch Basin

Trust NDS for proven, durable solutions that work, and support every step of the way

The NDS 4 in. Pop-Up drainage emitters act as the discharge point of a drainage system, opening easily when excess runoff is beyond system capacity to allow water to flow freely from the pipe and away from structural foundations, discharging at a safe location. The cap opens with the hydrostatic pressure of water flowing through the drain pipe, then closes as the flow diminishes. It allows water to be diverted and released to water-safe areas away from structures, erosion-prone landscapes, and poor drainage areas. The NDS pop-up drainage emitter with elbow is an easy, safe, and efficient solution to any drainage needs.
  • Allows water captured by grates, catch basins, channel drains, flow-well, downspouts and roof gutter systems to flow through the drainage pipe and discharge to a water safe area such as a gutter
  • Pop-up top keeps rodents and debris out of system
  • Connects to 3 in. sewer and drain pipe use adapters to connect to DWV pipe and corrugated pipe
  • Color matches surrounding landscape
  • Manufactured from 100% recycled plastic
  • California residents

Info & Guides

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Diameter (in.)
Max. Compatiible Pipe Size (In.)
Min. Compatible Pipe Size (In.)
Product Height (in.)


Color Family
Pack Size
Pipe or Fitting Product Type
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
Limited Lifetime

Questions & Answers


Is this made in China?

Asked by SpacemanSpiff December 31, 2020

No. It is manufactured in USA.

Will these pop-up covers survive repeated overrun from a commercial grade lawn mower? I will be i...

Asked by Bewilderedatman September 18, 2020

Thanks for your question. Your concern is valid. Although these popups are rather sturdy, indiscriminate overruns by commercial mowers might damage the popup assembly in two ways. First, a high lift mower may pull the popup up and sever it. Second, very heavy weight wheels of commercial mowers could crack the horizontal pipe (if using solid sewer pipe - use of the corrugated flex pipe takes care of that problem). One idea, depending on the landscape design, is to have the popup placed just off the turf line on the edge of a flowerbed/planting area.

my 4 inch drain emitter fails to cover after rain

Asked by cisco August 30, 2020

Thanks for your question. If the cover fails to seat properly after a rain event, I'd first remove the entire green top unit. Examine the center support area to see if debris has lodged there. Examine the inside of the pipe in the ground to see if it is draining properly. Installation of such a system recommends a 1/4" hole through the bottom of the in-ground pipe near the elbow which points upward toward the popup (I use and recommend a 1/2" hole and a bed of quarter stone beneath for better pipe drainage). Reach in and remove any debris. Clear the drain hole with a wire coat hanger. If no drain hole already exists, you "may" be able to drill one using an extra long specialty drill by angling down the open pipe hole. If not, then it's a digging job to expose the pipe and drill the hole. If so, then I do recommend additional digging beneath that section of pipe and backfill that area with quarter stone (available in the cement area of Home Depot not the lawn and garden section).

I installed two of these attached to a solid 10ft PVC pipe. It was raining hard the other day and...

Asked by JonW August 5, 2020

It happens- drive a screw or two from the side into the pipe- it’s just the rush of water- that will hold it in place

Can this pop up be connected to ABS pipe?

Asked by Edgar July 10, 2020

The elbow will connect to 4" Sewer and drain pipe.

I assume that debris that gathers in the gutter goes down the down spot and to the emitter ten fe...

Asked by Dick May 29, 2020

Thanks for your question. A couple options come to mind. First, yes you can remove the green top, reach in with your hand and remove the debris. You may find it convenient to reduce the debris entering the system. Debris grates can be installed (boxes with angled grids) that encourage large debris from the downspout to slide down and off the grate while the water continues down into the pipe. Also, a catch basin with filter can be installed where the downspout currently enters the pipe. The catch basin can be easily cleaned by hand.

Will this work with 4 inch schedule 40 PVC pipe

Asked by Harry May 4, 2020


Is this the same as Model No. 421? The NDS catalogs and spec sheets on the NDS website only list ...

Asked by JR April 21, 2020

Very similar. It functions the same way and used in the same application. The 421 is slightly different in design.

Max height between elbow and top of outlet? I have to bury the pipe deep to go under a walkway. F...

Asked by AAC April 19, 2020

The bottom of the elbow to the edge of the outlet is 7.5 inches. If you need deeper, you can consider installing a vertical PVC riser as the green emitter top disconnects from the PVC elbow. Keep in mind that this is not schedule 40 PVC but is sized for sewer drain pipe. You might find it difficult to find the solid white 4" drain pipe in this store, however. Note that the "bell end" of the sewer pipe would mate with the green emitter top, and the non-bell end would fit inside the elbow. Another alternative is to use the black corrugated "drain tile" tubing. NDS sells the adapter at Home Depot that connects such piping to the PVC elbow. If the corrugated piping/adapters are used, I recommend sealing the connections with RTV silicone as well as securing with stainless steel screws. There's also a competing brand popup emitter with corrugated drain tile tubing already attached which is sold by Home Depot, but I'd stick with the NDS brand products if possible due to their reputation.

I have two downspouts connected to one four inch pvc pipe that runs downhill under ground for abo...

Asked by m1ckvb April 16, 2020

That isn't what is needed in the case you mentioned, you would need to use a spreader to widen the discharge and you should dig out an area about 1 foot larger than the spread then fill it about 1/3 of the depth with gravel then top that off with larger stone. the size of gravel and stone may be determined by asking your Home Depot for advice in your area.

4 in. Plastic Pop-up Drainage Emitter - page 2

Customer Reviews

  • 4.4
    out of 133 reviews
  • 78% recommend this product
Filter by:
Showing 1-10 of 133 reviews
Excellent product!
Excellent product!
by Cusy
Works well, but don't mow over it.
This is a breeze to install and works well as a drain. However, don't mow over it. The mower will suck up the cap and destroy it.
by rbrull
7 people found this helpful
Works Well
I didn't buy this pop-up drainage emitter to use for my downspouts, which certainly would work too. I used it to connect to the pipe that comes from my sump pump. The is only 2 inch diameter, so I had to use a reducer, but it works very well. Some reviews mention that it might get damaged but the lawn mower, but if you put it level with the soil it can't get sucked up high enough to get damaged by the mower. I certainly haven't had any problems. I like the product because it is easy to install and it looks good, is not obvious in the grass. Since it automatically closes it also prevents dirt and leaves from falling into the drainage pipe.
by DEStefan
11 people found this helpful
Works great
I installed the NDS 4 in Drainage Emitter cover on an underground gutter drain. We were having problems with debris getting through the grate and clogging up the drain. This solved the problem. I initially had problems with a real heavy rain washing the cover off and our dog pulling it off. That was easily solved with a single self-taping screw. I provided some photos.
10 people found this helpful
The best part of the drainage system.
The NDS 4 in. pop-Up Drainage Emitters with Elbow works very well. It rained after 8 hours after installation, and I have added a short video to demonstrate how well it works. Thanks NDS, for your technology. it really works very well.
by SebastianUSA
16 people found this helpful
Do not buy
they only supply the green pop up and not the emitter as advertised
by dissatisfied
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Great product I buried 4 downspouts 12 feet from the...
Great product I buried 4 downspouts 12 feet from the house. I love this pop up drain. I don’t have any problems with water getting into my basement.
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
1 person found this helpful
by HomeDepotCustomer
Showing 1-10 of 133 reviews