PumpSpy Silent Check Valve - 1-1/2" with Buna-N Couplings, Model CV-150, Spring-Loaded Flapper, Sump Pump Life Expectancy Increase, Includes Steel Clamps Fit 1-1/2″ Pipe

I recently had to replace a 20 year old sump pump and I initially made the mistake of not replacing the also 20 year old check valve. I went ahead and ordered this relatively inexpensive part. Installation was super easy. No need to worry about screwing this on a threaded PVC piece, I just slipped the rubber ends on and tightened the metal bands using a flathead and it was nice and snug. Once I turned on the new sump pump, it worked like a charm and super seamless! No leaks and it was really quiet too! I love that I can also visibly see the little stopper that’s inside. Save yourself the labor costs getting a plumber to install, you can do it yourself with YouTube and some good ol’ fashioned manual labor.

We’ve had this running for over 2 years on our sump pump and it’s been working great, much quieter than the standard valve it replaced. No more banging noise throughout the house when closing!

We've been putting up with these loud knocks in the pipes for YEARS whenever the sump pump came on. It took my husband about 15 minutes to put this in and bingo, no more noise.

Water softener installer rigged up something that would leak salty water down my concrete basement wall claiming the softener required free and open discharge with no back pressure but ignored my request to have it tie into a lower point on the main sewer trunk line which would have netted a longer pvp pipe above the S trap to catch enough volume of water to allow gravity to pull it through the S trap without backing up the softener system or overflowing. So instead of letting salty water continue to rain on my wall and have to hand carry a bucket of water to another sump on the other side of the basement I decided to make catch basin right here using a five gallon bucket and sump with a check valve to force the unwanted discharge thru the drain and eliminate the need for an S trap since the check valve keeps water contained in the pipe so no sewer gases could enter the basement through it. The project was pretty easy and only required a few extra parts and was finished within a half hour tested it for leaks and already see this as a much more functional and practical method than what I was left with by a so called professional. Best of al lit was affordable compared to what I paid for labor installing the water softener. Perfect fit for what I needed and have no doubts in the quality in the check valve and believe this will last free of leaks for years maybe even for my lifetime.

I had ZERO issues installing it. Fit great. And it cycles great, too. The sump pump runs less, at the times it is needed. And so far, no leaking back past that rubber flapper check valve, which is critical. My only concern is its longevity. It’s clear plastic, glued together. In all my decades in engineering, that’s can be a weakest link. So that’s why I rated this 4 instead of 5.

I wish I installed sooner. I bought mine 18months ago but after redoing a dual pump setup with a Radon mitigation lid, I was in no hurry to dig that all apart to get at one check valve under that lid. But after 10's of thousands of cycles with a regular check valve on the primary pump finally worked its way loose from hammering away with seasonal heavy rains, I updated both 1.5 and 2" pipes. Easy to install and super duper quiet!!! Omigosh, we can sleep at night with no one thumping on the walls of the basement. My 1.5" is on a Halo system that is essentially my cycle counter with the larger emergency backup on a 1hp 2" pipe. Nice to see the action of each unit. Only thing I wish they had was a magnetic catch that could help manually open the flap for extra peace of mind come brutal Wisc winters to avoid freezing any water that might still be near the wall or exit area. Mine typically run early spring and wet summers and sump is basically bone dry come winter especially with the Radon fan - which also increases the flow of water due to the immense suction generated. I cut an access window in mine to be able to inspect and reach an arm in for emergency maint work on sensors, etc..

Works as advertised. Saves me A LOT of problems with my pond filter. I made a biological filter for my pond out of a 55 gallon plastic drum. The filter sits remotely from the pond and is at a higher elevation. The problem with my design is that when the power goes out the filter would flow back into the pond. The filter is full of K1 plastic media. The media would clog my pump. So, when the power came back on, the pump would not function. I can tell you that getting all of that plastic filter media out of the 1.5" pipe and the pump was A LOT of work. I tried a less expensive check valve, and it failed to do it's job. THIS valve works. It works perfectly. I am very happy knowing that with this valve my pond filter system will be protected.

It works great nice and quiet