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

Item no: 40005 | 039172000464
100  Estimated 

FREE Pickup at your local Ace! Find my Ace. (details)
to-done LIST

at Your Local Ace

Ship to home is available. Leaves warehouse in 1 to 2 bus. days. (details)
STORE AVAILABILITY: Your neighborhood Ace stocks thousands of products in the quantities you need. Check with your local Ace for availability. (find your local Ace)
  • 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.

30-Day Return Guarantee

We want you to be fully satisfied with every item that you purchase from If you are not satisfied with an item that you have purchased (subject to the return exceptions below), you may return the item up to thirty days after the original purchase date to receive a refund (less shipping, handling and other charges). We recommend that you make returns of online purchases to an Ace retail store near you which will issue you a refund. If you do not have an Ace retail store near you, please contact a Customer Service Specialist by calling 1-866-290-5334 for complete return instructions. Please refer to our Return Instructions for more information about returning a purchase.

The item must be returned in good condition, in original packaging (whenever possible), with all paperwork (including product instructions or information and your packing slip), and parts and accessories to ensure full credit for purchase price (not including shipping and handling, gift-wrap, or additional charges). After 30 days from the original purchase date, please contact the manufacturer directly.

Return Exceptions:

30 Day Return Policy does not include Gift Cards, Magnolia Home Paint or gas-powered outdoor equipment.

  • Gift Cards cannot be returned for any reason.

  • Because each Magnolia Home Paint product is made to order, undamaged paint products are non-refundable. Magnolia Home Paint products purchased on cannot be returned for any reason. If your Magnolia Home Paint product arrives incorrect or damaged, please contact a Customer Service Specialist by calling 1-866-290-5334.

  • Gas-Powered Outdoor Equipment (such as tillers, edgers, mowers, string trimmers, blowers, tractors, generators, chainsaws, snow blowers, as well as all other gas powered chore equipment) may be returned within 30 days of the date of purchase, with original receipt, provided that it is in like-new condition. Gas-Powered Outdoor Equipment cannot be returned once gas or oil has been put in it, even if the equipment has been drained of these materials.

Please note that if your Gas-Powered Outdoor Equipment is defective or is not functioning properly, its service and warranty issues will be handled through the authorized service center. See Return Instructions for more information.

What people are saying

sort by:


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

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

Back to top


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!

        Displaying reviews 1-2

        Back to top

        © 2018 Ace Hardware Corporation. Ace Hardware and the Ace Hardware logo are registered trademarks of Ace Hardware Corporation. For U.S. Residents Only.
        HACKER SAFE certified sites prevent over 99% of hacker crime.

        Add Item to To-Done List

        To use this feature you must be signed-in to your account, please sign in now. If you do not have an account, please create an account to participate.

        Ace Rewards

        Ace Rewards is a free and rewarding membership program that lets you earn rewards with every purchase you make! Join now.