Ace 1-1/4 to 2 in. MPT ABS Plastic Swing Sump Pump Check Valve(ASC 125BLK)

Item no: 40005 | 039172000464
100  Estimated 

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  • Valve Outlet Diameter: 1-1/4 to 2 in.
  • Connection Type: MPT
  • Material: ABS Plastic
  • Valve Type: Swing
  • Product Type: Sump Pump Check Valve
  • Push to Connect: No
  • Average Lead Content: Lead-Free
  • End 1 Type: 1-1/4 in.
  • End 2 Type: 1-1/4 in.
  • Application: Water
  • Fits 1-1/4"to 1-1/2" pipe
  • "Buna-N Flapper
  • Full flow
  • Sonic welded
  • Threads directly onto 1-1/4" pump discharge and barbed discharge
  • ABS
  • Prevents water from draining back into sump basin

This item can be shipped to your home. Or pickup this item at your local Ace Store for FREE*.

*Items shipped from our warehouse to stores in Alaska and Hawaii will receive a 70% shipping discount.

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What people are saying

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by PowerReviews
ACE HARDWAREAce® 1.25-2in Sump Pump Check Valve

(based on 2 reviews)

Ratings Distribution

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  • 1 Stars



Reviewed by 2 customers

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Still going strong after more than a decade

By Andrew P.

from Morgan Hill, California

About Me Avid Do-It-Yourselfer


  • Durable
  • Easy To Install
  • Easy To Use


    Best Uses

      Comments about ACE HARDWARE Ace® 1.25-2in Sump Pump Check Valve:

      I pulled my sump pump out during some plumbing modifications in March 2017 and found a little silt and bacterial slime inside the valve on the rubber flap. After tucking a plastic pot scrubber into the ends of the valve body and twisting it a few times to dislodge the film, the valve looks good to go another five to ten years. I have no explanation for why other reviewers found the Ace 40005 check valve unsatisfactory, unless Ace switched suppliers recently and the current supplier is experiencing quality problems. It has worked well for me.

      (1 of 1 customers found this review helpful)


      The two I purchased were faulty.

      By GeoMass

      from Clinton Corners, NY

      About Me Between Handyman and Pro


      • Easy install


      • Flap leaks

      Best Uses

        Comments about ACE HARDWARE Ace® 1.25-2in Sump Pump Check Valve:

        This check valve was an easy intall. In March the old pump failed and I bought an Ace Submersible Sump Pump just in time. Two days later the sky opened up and am I glad I didn't procratinate this time. The problem with the check valve is it did not work well. The flap would allow water to back feed befpre it eventually closed. After that flood I exchanged the valve for another. Same problem was present. I eventually asked for credit toward a brass check valve and adapters to fit my application. No prob;ems now!

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