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

It's quiet, and the clear design allows you to ensure it is working properly. Installation was a snap.

I replaced an existing check valve that was starting to get loud at shutoff. That one was inline with some rubber couplings, so I had expected to be able to replace it directly with this, maybe some adjusting for any length differences. However, none of the home hardware stores I found had a transition to go from the 1.5" OD of the existing pipes to the odd size of the external of these couplings on the end of this valve. It's smaller than a 2" OD so they wouldn't work, but too large for a 1.5". I couldn't find any 1.75" coupling adapters, so I ended up just getting some PVC cement since the existing pipes fit into these just fine. Then I used a rubber coupling on the straight pipe I glued the top of this to, to connect to the rest of the pipe. The clear plastic of the center piece presses against the pipe ends it's supplied with, using a rubber seal around the top edge of those pipe ends you see coming out the top and bottom. The circular tightening ring secures it all well, so there's no leaking at all. If you have enough play in the pipe coming into the top of this, you can loosen it up and remove it easily enough if needed. I was tempted to buy a second one to have on hand in case they stop making them by the time this one starts to fail, so I could just loosen the two couplers, pull the middle out, and put in the new one in a matter of a minute or so... I posted a couple pictures of my install.When I installed this, I had no water coming in, I only had what was still in the crock, but it was enough to do a test run to check the sound level.The check valve I replaced was a good one that I had picked up from a plumbing supply store, not just the generic things they sell at the big box stores. It worked great, but over the last three or four years, it started hammering more and more.This one, even right next to the unit, was dead silent. Since the pipe run exited the house right above my head at the top of the basement level, I was perfectly positioned to hear any noise it would make. With the old one, I'd hear a click as the sump pump turned off, and then a second later the THUNK of the valve closing. I heard nothing here. I don't know if that's because the spring helps it close quicker before pressure forces it or what, but it works great.I also love that it is clear - so you can see inside easily. The check valve I replaced was solid red, and when I removed it to put this in, I could see the buildup of minerals or something around the valve that helped contribute to it losing the silent feature. With this, I'll be able to visually check on the state of the valve as time passes.After install, my positioning I see could have been better - I wish I had placed it either a little lower or a little higher, since the top of the clear center piece is level with the crock cover. So now I can not place the cover until I get a dremel tool and do some modifications for the slit going around the pipe. But that's not much of a concern for me as quiet as it is.Got some very heavy rains a few days after I installed it - dead silent, couldn't hear anything at all, upstairs or down by the unit. Definitely the quietest check valve I've ever had.

Unbelievable! I was skeptical from a bad experience but this thing really works! Totally silent. A couple years ago I had to replace my sump pump. I had used a regular check valve with it, but it was noisy. I saw what was claimed to be a quiet valve called a "Basement Watchdog Klunkless Check Valve" and thought it would provide some relief. Wrong! Since the day installed it, the noise it makes is far worse than the conventional check valve it replaced. Every cycle it makes a HUGE clunk heard throughout the house and the pipe then shakes and vibrates, reverberating the the noise. After about two years, it is getting worse and worse. Even wakes me up at night. I kept putting it off, but finally got fed up and found this demonstrated on YouTube and, luckily, found it in stock locally. Exact same construction, just different name. Took all of 5 minutes to swap them out. The first cycle, I was flabbergasted. Totally silent! Only the hum from the pump motor running. Ten stars!The one I found has the rubber couplings like the old one and is the exact same length, so was a direct, easy and quick swap . The rubber also helps deaden sound and makes replacement so much easier. The one in this listing does require gluing, which I see no advantage to. So a rubber coupling version does exist; you may have to shop around. This exact same item is sold under different brand names.

These are the only way to go. I've used these one way valves on several homes for years and love them worth every penny. Quiet as a mouse. No thumping

If ever someone could love a plumbing part, this is it. We recently moved to a house that happens to be built in an area with a high water table roughly just barely under the slab of the basement. The sump pump is conveniently located directly under the master bedroom, right under the only place to put the bed. The sump pump goes off an average of 2,000 times a day. So every night I would lay there and listen, vroooooooom....THUD....vroooooooom....THUD....vroooooooom....THUD....vroooooooom....THUD.... thus ruining almost every night of sleep unless I was liquored up. I was so fed up and was starting to lose my mind. I wasn't getting the sleep I needed and was crabby as ever causing my wife to dang near hate me. She now hates the words "Sump Pump" and punches me whenever I say them because I complained about it so much.....until now!!I have tried multiple check valves over the years to eliminate the dreaded "thud" and none of them worked very well. They were all designed the same way and obviously all had the same result....THUD. This check valve has a much better design. A design that I think should almost be mandatory!! It took just 15 minutes to install but you will need the plumbing cleaner & cement. It doesn't have the rubber attachments to connect it to the plumbing so it might not be an exact fit. If you need to, have a professional install it because it's worth it. Once I installed it, I watched it run and then shut off so I turned around so I couldn't see it when it kicked back on and literally could NOT hear it stop when it shut off. I know I know, you're thinking "This guy's exaggerating. It can't be that quiet". No, I'm not exaggerating. This check valve is quiet and should be the ONLY check valve allowed to be used!! For all I know it will quit working in a year but I don't care. Once installed, it simply unscrews for a more than easy replacement. I would buy this thing every year if I had to. It's that awesome!! Don't waste your time with other check valves!!The ONLY negative thing about this check valve is that it works TOO good. Since you can't hear it clunk, you don't know if your sump pump stopped working or not. Best advice is to do what I did, have a backup pump installed and ready to run as well but have a regular check valve on it. That way if you ever hear the "clunk", you know your primary sump pump quit working and you're on your backup pump.Thank you Campbell Manufacturing for saving my marriage.**Update 3/9/2017** The valve is still working like a CHAMP!!!

Easy install, and QUIET! I don't hear it at all. It gives me peace of mind knowing that it can prevent a back flow flood. Great quality, fast delivery and well-priced. This is my second one.

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!

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.

This check valve is exactly what I was looking for. In the past, whenever my sump pump shut off there would be 2 loud knocks from water hammer. This check valve eliminated that and it is even quieter when the pump is running. I wish I had got it a lot sooner.

Easy to install and very quiet when in use. I like it so far.