Rated 3.3 out of 5 by 6
Rated 5.0 out of 5.0 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.
October 31, 2015
Rated 5.0 out of 5.0 by Jamest 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.
November 11, 2015
Rated 4.0 out of 5.0 by Chad Working as intended
I installed this product at the end of a drainage system tying two of my downspouts together. Three severe thunderstorms and Hurricane Sandy put it to the test. The only reason it didn't get five stars is from the emitters tendency to stick closed in moderate rainfall if it isn't cleaned periodically. I really like the low profile design and the subterranean elbow emitter that prevents the constant "weeping" of water across my driveway. No problems with my lawn mower shearing off the pop-up cap.
December 23, 2012
Rated 3.0 out of 5.0 by Malchoyc Research installation first
I purchased three of these and they appear to be working ok. Have
had only one rainfall heavy enough to operate the pop-ups.
August 26, 2014
Rated 2.0 out of 5.0 by williamstownbob fragile covers
My mower sheered off the pop up on both of these. I swear, the covers were flush to the ground, but it must not take much to catch them. They should sell the pop up parts separately--you can't mow over them, apparently, unless they're below grade. I tried to superglue the pop up on one and drive over it slowly, but it still broke off. I'll replace it with a standard drain cover, I think.
July 6, 2010
Rated 1.0 out of 5.0 by TeeZee My riding mower sometimes sucks up the pop up cover and it's gone. Why dont you see just the pop up cover without the elbow?
Very expensive to replace when you sell the useless elbow with the pop up cover.
April 11, 2015