General Specialties Flood-Guard for 2" Flood Drains

This is an essential item for my home. I highly recommend it. . I have had a 2" version for the last ten years in an outdoor basement stairwell. During that time, my only complain was that it was slow to drain in the forward direction (more on the later). The rubber finally hardened up and it stopped doing its job. I took it out and hoped my problem would magically be gone, but no. Time to buy another. This time, I modified it to increase the forward flow. I opened the three holes on top with a die grinder. But the most improvement came from removing about 3/16" from the long rubber. This allows the valve to open more. It still functions perfectly to prevent back flow, but allows much more volume in the normal flow direction. Again, highly satisfied with this item!

This thing is well made, not an ounce of plastic and it’s manufactured in Pennsylvania, USA. No reason to consider any other brands, this thing works! Have used the 2” model on PVC drain pipe and it’s stopped flooding every time.

It rained for 10 days straight and the ground was saturated. I have a drain in the basement adjacent to the air conditioner and water softener- both discharge into it. I also had a sump pump installed in the basement 6 years ago to take care of constant wetness. I thought I had everything taken care of the problematic basement until the rain came.... The drain had backed up due to the excessive rain and left a four foot radius of water around the drain. The drain pipe was not clogged up. The ground table was saturated and the water had no place to go but up the drain into the basement. So, I got online to see how to find out what caused this, and how to resolve the problem. I decided to use this product, which is very easy to install. I hope it never rains for days at a time like it did before, but if it does, at least I have taken the precaution to use this product . I will still clean out the drain pipe once a year and clean the flood guard every so often. So far, no water problems.

Basement drain without much slope, floor flooding regularly. Installed the flood guard and "voila," no more backing up onto my floor. I have no idea how effective it would be for big backups, but it has eliminated the 16-20 ounces I was seeing on a fairly regularly basis entirely. I did take the advice of another reviewer and purchased hex head screws to replace the ones included, which made it much easier to install because I didn't have to press down. Basically, the screws collapse the area between the two metal parts and expand the rubber to fill the drain. Until you do that, it just slips up and down in the 2" drain. Once installed, the mechanism is simple. An upside down cup slides up and down based on whether water is coming up the drain, closing off the drain to prevent backflow. It's been about a month, but no problems so far and I it works exactly as advertised. Also, it was also so cheap that if it ever stops functioning, I'll probably buy another. Update, 16 October 2016: stopped working and I took it out to figure out why. The valve, which is really just a piece of stainless steel running through a stainless steel hole, was frozen. I lubed it up with silicone grease, but it didn't loosen up enough for me to feel comfortable. We shall see...

This is a great option for what we needed. We installed the guard in a basement shower that had no back flush prevention from city sewer when the rains were heavy. This item solved the problem. Keeps the bad stuff out and works well to drain

Easy to install and quality hardware. This was a replacement for what was previously installed. It's very forgiving. Previous house owner incorrectly installed it and also the inside of the drain pipe has bumps/deformaties and yet it still worked for at least a few years. I put it in my basement drain that's next to the furnace and water heater. Pointers - use a large zip tie in the holes so its easier to positon the drain guard and tighten the screws. Slotted screws are used for a reason and not allen screws. The screw head slots give you a reference when tightening to expand the gasket. Tighten the screws a little each at a time to keep the pressure even and drain guard centered (1/2 turn each screw, then 1/4 turn each screw until they are all tight). Also my drain guard didn't work everytime the first time I installed it because the floater part was a tiny bit long and sometimes rubbing the inside of the pipe where my drain pipe curves. The drain would flood when a bubble bath drained. I cut 20% off the bottom of the floater, reinstalled and it works perfectly. The basement bath also has a drain guard and it works fine, but since I don't know how old it is I'll replace it. I'll probably replace them every three years even if they are working since its easy to do and cheap. Although I think they would last longer. I'll also spray some silicone lube on the floater metal rod once in a while which is easy to do since it's right on top of the drain guard.

Stopped our recurrent backflow problems immediately. Can now shower in basement without water from kitchen sink coming up through drain! Very easy to fit and well priced. Only wish I had known it was available before.

WORKS WELL

Excellent to prevent back up flow of water from the shower drain when I drained the water from the bath tub. Works perfectly.

Works well. Purchased for my shower drain works very well.

It seems good quality although I did not install it yet.