Check Valve Quiet CLR1.5 by Brady MfrPartNo 0823-15C, White

Why: I bought this because we had no check valve in our sump pump discharge system. Every time the sump pump would turn off, any water between the pump and the exit point of the house would just fall back into the sump pit, almost filling it back up. This was causing my pump to work two or three times as much as it should.Ordering: There were some import fees for me, but they were minor. I really didn't mind as the package showed up a full week earlier than it was supposed to arrive. That was an excellent bonus!Performance: I have had zero issues. No leaks, the valve is completely silent when it closes, and it is kind of neat that it is clear so you can see the water going through it.Tools: You will need a simple saw capable of cutting PVC or ABS pipe, a pencil or marker, and pipe weld glue/cement.Installation: This is my only point of concern, as there were zero instructions that came with the valve. Let me offer some basic instructions.1) First off, there are two types of pipe: PVC (white) and ABS (black). The connections on the check valve are made from PVC. This is all important as it will dictate which type of pipe weld glue you use. The most common brand I see at hardware stores is Oatey. They have ABS to ABS, PVC to PVC, or ABS to PVC (also called "Transition" cement). They say clearly on the label which application it is for.2) Wait for your sump pump to discharge, then unplug it. The last thing you want is to cut open the stack and have your pump shoot water all over your basement!3) Figure out where you want the check valve. As close to the sump pump is best so that the least amount of water falls back down after a pump, but generally somewhere about a meter above floor height is good, so that you have enough room to work. Mark out the height of the clear portion of the check valve on the pipe, and add a centimeter on each side to account for the adapter.4) Cut the discharge stack at the marks you made, discard the scrap pipe.5) Thoroughly dry and wipe the pipe ends. Slide the locking wheel onto the pipe first and up out of the way, then apply glue to the outside of the pipe and the adapter. Quickly slide the adapter onto the pipe firmly and give it a quater turn to ensure it is firmly set.6) Repeat on both ends. Don't forget the locking wheels, as they won't go on once the adapters are glued. Let the glue dry for a few minutes.7) Check the plastic O right on each side to ensure they are not broken. Place the check valve between the adapters, and screw the locking wheels evenly onto the check valve by hand. DO NOT OVER TIGHTEN! You want it tightened firmly so that the O rings are pressed together creating a seal, but other reviewers have mentioned that overtightening can crack the plastic, rendering the unit unusable. I tightened mine firmly by hand, and have had no issues.8) All done! Good job! Enjoy your check valve!

It truly is the Quiet One, i installed it on my 1.5 inch sump pump line and plugged the pump back in and not a sound when it pumped the water out. The cheap sump valve that the builder had installed by his plumber made a loud tapping noise when the pump stopped.The check valve closes when the pump stops pumping water from the sump pit preventing back flow of water to the sump pump that is where you get that tapping noise.The noise goes through the whole house when the check valve closes every time. Well my other job has the same problem and i will buy another one to fix that problem.

I have had 4 check valves fail in 2 years on our sump pump. We had been using the $25 ones because that is all the big box stores sell- typical. installed this and immediately noticed the water hammer decrease. Only used for limited time. So far so good.

We had to wait a bit to get this check valve and to be honest it was a little more expensive than some others. Nevertheless, it is worth the time and money. Easy to install but more importantly absolutely quiet. Fantastic purchase on my part.

I don't usually leave reviews but I had to do one for this "QUIET" check valve! What can I say other than it works! I live in a high water table area and my sump is right below my bedroom and my old check valve that I bought from home depot with the flap always had several loud bangs when the pump shut off and the water going back towards the sump hit the flap but this has fixed that and I don't have to listen to the flap banging shut anymore. I would highly recommend and it is worth the money.