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

I love how quiet & easy to install this was.We dont hear it anymore in the room above truly as advertised!

I can’t believe I’ve waited so long for a quiet check valve. This valve is excellent, just what I wanted. My bedroom is right above the sump pump and the old valve would wake me up. This valve is great, no more problems waking me up.

Extremely easy to install just check the pump a couple times to make sure the screws are tight enough. I couldn’t even hear my sump pump go off while standing next to it! I had to confirm it worked with the clear view in the valve. My sump is also sealed for radon.

Using with a pond recirculating pump to keep the pump primed when not running. After a short, while, small debris in the water stream tends to cause the valve to not seal completely. Still aids in shortening the time it takes for the pump to reprime on restart so we feel it seems to help.

Wish I found this years ago. All but eliminated the water hammer of a closing valve. Now when the sump pump runs, we hear a hum, and then nothing. No water hammer or closing valve. Install was easy. 2 clamps on either side. Highly recommended.

Was exactly what I wanted, works as promised.

Works great, just as advertised.

This check valve eliminated the thump I would get from the replaced one. My sump pump sits right under my family room and with the old valve it sounded so loud I thought things were going to fall apart. But this one eliminated the noise so well I had to listen carefully too make sure my pump was working.

Compared to the valve it replaced, this thing is a gem. The thump thump thump (17 times each cycle) is gone. Slightly longer pump cycle time, but very reasonable. Easy installation, real test is coming this spring.

PumpSpy replacing Cant Clunk check valve. Hands down PumpSpy is FAR superior!!