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Internet #202809421

Model #KCV

Store SKU #541996

$2198
  • Stops the annoying clunking sound when the sump pump turns off
  • Airtight chamber prevents water from re-entering the pump pit
  • Valve installs easily with no gluing required
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Price:
$2198

Product Overview

This Basement Watchdog Klunkless Check Valve features a silencing air chamber that absorbs the shock that normally occurs after a pump shutoff. The valve installs easily on both 1-1/2 in. and 1-1/4 in. pipes with no gluing required (pipes not included). An airtight chamber helps prevent water entry.
  • Installs easily on both 1-1/2 in. and 1-1/4 in. pipes with no gluing required (pipes not included)
  • Fits easily in compact spaces
  • Silencing air chamber absorbs the shock that normally occurs after a pump shutoff
  • Airtight chamber helps prevent water entry
  • Helps eliminate the irritating clunk that can happen when your sump pump turns off (sump pump not included)
  • Includes stainless-steel hose clamps for convenience
  • Not for use with ejector pumps

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
3
Product Height (in.)
11.75
Product Width (in.)
5

Details

Brand Compatibility
Various
Fitting Sizes
1-1/2",1-1/4"
Pack Size
1
Product Weight (lb.)
1
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
1 Year Limited

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 3.3
    out of 130 reviews
  • 49% recommend this product
Filter by:
Showing 1-10 of 130 reviews
Never worked quite right...and then the valve broke!
This worked right for maybe a month, if I'm being generous. After that, there was always some sounds of water surging back through the pipe in waves. It didn't flood back in to the sump, but after the waves stopped, there was a consistent stream back. It filled faster than it should. But I didn't realize this piece of junk was the problem, so I let it go, thinking it was just the way my system was as a result of the pipe setup. This continued for a year or two (I don't remember exactly when I bought it). The past few days, I noticed the pump would stay on at times. I checked the switch and it was fine. I couldn't figure it out. Then I noticed how much water was flowing back through the pump after it would cycle. It would almost fill it back up to where it turned on again and then it would run again within a minute. Sometimes the pump would get stuck on as a result. This really puts the pump at risk of burning out, so I was wanting to fix this problem quickly. I realized it had to be the check valve. I replaced it with one from Zoeller (Model #1030-0242) that has a clear tinted plastic around the valve and the valve also has a spring on it. That thing is MUCH MUCH better. It's far quieter, for one, and it does the job right. When the pump stops, there is NO back flow and it's quiet. It also takes a LOT longer for the sump to fill now. So, the pump will have a longer life and my electric bill will go down a bit. I'd never recommend or buy this junky version again. I'm very happy with my Basement Watchdog battery backup system and the switch that the main pump plugs into, but this check valve is not worth a dime. After replacing it, I looked inside and saw the valve was completely flipped over (see pictures). Once I tapped it with a screwdriver, it just fell out of place and I could see it was completely broken off. What junk. You can also see evidence in the pictures of where it had apparently been leaking from above the valve area. It looks like there was a small crack/hole there. That was probably there the entire time and perhaps part of the problem. Do yourself two favors: 1. Be sure to have a backup system (the Basement Watchdog battery system has been great for me for 13 years with only one battery replacement in that time). 2. Do NOT buy this check valve and instead get a Zoeller.
by
Response from WatchdogAug 13, 2020
Sorry to hear you had a problem with our Klunkless Check Valve. I know you mentioned you already replaced it but we can still send you out a replacement so you'd have an extra one on hand. The experience you described with it is definitely not the norm. I would recommend contacting our service team so we can assist you with this. We can be reached at 800-991-0466 option 3 Monday - Friday central time. Or feel free to email us at service@glentronics.com
    2 people found this helpful
    So far so good. I was able to install it relatively easy. I ran a few tests with it and it is so...
    So far so good. I was able to install it relatively easy. I ran a few tests with it and it is so much quieter than the previous check valve. Very happy so far.
    by
    • DIY
    • Verified Purchase
    • Recommended
    Read all reviews negative and positive. Decided to buy it and give it a try. My pump failed, so I...
    Read all reviews negative and positive. Decided to buy it and give it a try. My pump failed, so I had to re-due pipping anyway. I installed the valve and I have noticed reduction in in Klunkless. It did not eliminate the entire klunk, but the klunk that is left is outside. It does transfer into the house, but the reason it still exists it the way the pipe is deigned not to freeze. The basement klunk is gone. Overall I believe this product did what is designed to do.
    by
      • Recommended
      Certainly reduced the “klunk” sound from our basement, but can...
      Certainly reduced the “klunk” sound from our basement, but can still be heard from our first floor.
      by
      Response from WatchdogNov 10, 2021
      If you are still getting that sound from the check valve I would recommend calling our service team so we can see if there are some adjustments you might be able to make that will help dampen the sound more. You can reach us at 800-991-0466 option 3 and we're here to help from 9-5 Monday - Friday central time.
        by
          Leaks and change of overall length
          Just bought a replacement valve. Went to install new one and found out the overall length was approx. 11". Old one was around 9 1/2". The company decided to changed the rubber coupler sleeves which changes things for easy swap out. Center area leaks.
          by
          Response from WatchdogOct 18, 2021
          We are sorry to hear that you are having trouble with the new length and leaking in the check valve. If you contact our customer support team at 800-991-0466, option 3, we can discuss methods that might help make the installation easier and also take care of the problem with the product itself. We are available to take incoming calls from 9am – 5pm CT Monday through Friday.
            1 person found this helpful
            I originally bought the Klunkless Check Valve to get rid...
            I originally bought the Klunkless Check Valve to get rid of the annoying clunk when the sump pump shut off. After 6 years the seal for the check valve started leaking. This was purchased as a replacement. The rubber couplers are longer on the new valve.
            by
              1 person found this helpful
              by
                by
                  What a difference, no more door slamming every 10 minutes...
                  What a difference, no more door slamming every 10 minutes during rainy season.
                  by
                  • Verified Purchase
                  Showing 1-10 of 130 reviews