The sewage ejector pump in my basement made a loud water hammer thump every time it ran - enough to shake the pipes and get our guests asking "what was that!?!" I was a bit skeptical of this quiet check valve but I can say that the noise has been reduced by 80-90%. Unfortunately for me, I needed to pay someone to install it and that cost me much more than the part - but still absolutely worth it. Hopefully the metal spring holds up for years, but only time will tell.
Jim Recommends This Zoeller Product
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