PumpSpy Silent Check Valve with Buna-N Couplings, Spring-Loaded Flapper, Sump Pump Life Expectancy Increase, Includes Steel Clamps Fit (2 Inches)

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.

Easy to install. Very. Quiet operation

This "silent" check valve is really SILENT! For years I have endured the big thud bang sound at the end of a sump pump cycle. For the first time when my sump pump went off this time, there was no sound at all! One other thing, this silent check valve was extremely easy to install. Lastly, the price was excellent. I highly recommend this silent check valve.

This thing works so well I had to double-check it was actually on. It’s impressively quiet—like ninja-level quiet. If it were any quieter, I’d be wondering whether it was powered by thoughts and prayers instead of actual engineering. Build quality is solid and feels made to last, with a secure fit and no leaks. The clear housing is great too—it lets you peek inside like you’re inspecting a tiny science experiment, except everything is working exactly as it should (a rare joy). Easy to install, whisper-silent in operation, and rock-solid performance. Honestly, the loudest thing about this item is me telling other people how good it is. Highly recommend.

Works great should've gotten this years ago, old style banged alot when it ran an stopped, this was one can't hear at all only problem I ordered the wrong size pipe size ,but trip to hardware store fixed me right up

I installed these on my two sump pumps and immediately noticed a difference! No more thumping and gurgling. These valves are super easy to install, are whisper quiet and perform flawlessly! Being able to actually see the valve operate is also a big plus! Very pleased with this purchase and would highly recommend!

performs as advertised- would recommend to anyone!

Super easy to install, no issues with any leaks. I really like that you can see the valve functioning.

The sump pump that came with our house was quite loud and had a normal check valve that had a massive THUNK sound every time it engaged. Our sump pit is in the room directly below our boys room so it would wake him up occasionally, which was not a good time. I replaced the sump pump with a Red Lion RL-SC50T which is also VERY quiet, and this check valve is indeed silent. I used to be able to hear the pump and check valve from anywhere in the house, and now I can only hear it from a couple feet away. If the loud thunk sound drives you nuts and you currently have a loud pump, I'd buy the combo of the Red Lion and this check valve...... It's been great and I can't recommend it enough. Install was super easy as well; 3 wraps of teflon tape, thread it into your pump outlet and clamp it to your existing ABS or PVC pipe and you're good to go. Couldn't be easier. I've had this installed for about 3 months and it's still quiet and working great.

OMG this is the best thing since sliced bread!!! We had the noisiest CLUNK noise when our sump pump was going off, with rain & running non stop there was NO sleep to be had at night. Did the research on this product and OMG it is worth EVERY penny!!! We are now 'checking' sump pump area as to make sure its actually working as its SO SO quiet but so far so good. Only thing to watch for when changing it over to this new amazing SILENT CHECK VALVE make sure to have a BUCKET & TOWELS on the ready as there is A LOT of water left in upper pipe lol If you are at all 'pondering' about purchasing this....DO NOT HESITATE...purchase ASAP!!! Very happy customers in a high water table area and looking forward to a good nights sleep!!

Worked great – 99% of the water hammer noise is gone! Huge difference. Only challenge for those with a basement watchdog pump I’d disclose - the pumpspy check valve body diameter is wider than OEM which the pumpspy check to encroached upon the main pump handle and wouldn’t screw in. To solve, I ended up buying another male threaded connector to screw into the main pump, added a bit of pipe to get over top of the pump handle then a female fitting for the check valve to screw into (to clear the handle). This meant re-plumbing the main and backup pipe plumbing as well.

Bought this to stop the water hammering caused by my standard check valve. This valve works great and was easy to install. If you want to get rid of your water hammer, get this.

I toyed around with the idea of purchasing one of these for a long time. Every time it rained, I would swear that I’d order one. I live in an a high water table area so my sump pump runs every single time it rains or if there’s significant snow melt. I broke down and purchased one but it got lost in transit, I ordered a replacement and decided I’d wait for the rain and spring thaw to end. My sump pump has been literally running nonstop for the past month. Yesterday I went to my basement to find that my loud check valve decided to spring a leak. I had no choice, I had to change it ASAP. I waited for the interval between the pump turned of and on slowed down and finally took the plunge. Super easy installation, unplugged the pump, loosened the clamps on the old check valve, pull it off and quickly put the return section of the pipe into a bucket to drain. Throw the new valve on, tighten the clamps on to the pipes and plug the pump back in and enjoy the leak free silence of this engineering marvel. I’ve written many reviews in my lifetime but never have I been compelled to write such a detailed review as this one. This check valve is a god send, no more constant water hammer, just the quiet buzz of the pump. If you have a sump pump and your check valve emits a loud noise due to water hammer, do yourself a favour and treat yourself to one of these, it’ll be the best money you’ll ever spend.