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

This check valve is used for removing flood water. It worked when first installed, kept the water in the hose from flooding the basin. After it sat for a few days, when the pump came on again, the flapper wouldnt open to pass water. Pump works just fine with check valve removed. I removed the check valve and cleaned the seal surface, it worked next time but when it sat for a few days, flapper wouldnt open next time it was needed. Not reliable at all if you depend on it not letting water return to the basin then emptying the basin when needed.

Tired of the cheap builder grade hammering loud check valve and bought this gem. Wish I knew this company was local and I would stop by and just bought it. Excellent valve and 100% quiet

Installed same day received. 10 minutes max. Length is a bit shorter than old valve so I had to modify the pit a little. But wow, the difference is surprising. Noise eliminated. Love this thing. Ordering 2 more. (Note: I use a thumper valve on the backup sump so I’ll know when the main has failed) Seriously quiet.

Like it states zero sound, now I hear the sump pump

Easy to install & don’t even hear my sump pump run anymore.

Amazing! Bought the cheap one from home depot and this one is so much better for only a little more. No loud hammering, no sound at all!

Best thing to buy for my sub pump. No more noise and super easy to install. Would highly recommend.

I had purchased a different brand of quiet check valves, but they were as noisy as the ones I replaced. The sump pump has only run a few times since I installed these, but there was no “bang” or hammering sound.

My old check valve always made a loud bang when the sump pump ran. This valve is totally quiet, I’m very happy with it.

I bought this valve because the one installed by the builder is so noisy and wake me up at night everytime the pump runs. After installing this valve, it is super quiet, I cannot even hear it and have a good sleep. Love it.