$1369
- Compatible with any 1.25 in or 1.5 in. sump pump
- Exceptionally durable flapper ensures long-lasting performance
- Rugged ABS construction with stainless steel clamps
- View More Details
Product Overview
For sump pump applications the THD1020 can be used with any 1.25 in. or 1.5 in. sump pump. The THD1020 features 1.25 in. or 1.5 in. combination rubber adapters and the industry's most durable check valve flapper. This is the world's most reliable sump pump check valve.
- Can be used with any 1.25 in. or 1.5 in. discharge sump pump
- 1.25 in. or 1.5 in. combination adapters
- Fits 1.25 in. or 1.5 in. black, galvanized and DWV Sch. 40 pipe
- Industries most durable flapper
- All stainless steel clamps
- Strong, durable ABS body
- Millions in service
- Compatible with any 1.25 in. or 1.5 in. discharge sump pump
Compare Similar Check Valves
 | Best Seller |  |  | |
| Brand | Superior Pump | Everbilt | EZ-FLO | |
| Name | 99509 1-1/2 in. MPT x 1-1/4 in. Barb or 1-1/2 in. Slip ABS Check Valve | 1-1/4 to 1-1/2 in. ABS In-Line Sump Pump Check Valve | 2 in. Sewage Check Valve with Flexible PVC Fittings | 1-1/2 in. IPS Brass Swing Check Valve |
| Price | $764 | $1369 | $2098 | $3005 |
| Ratings | (4) | (650) | (133) | (2) |
| Connection | Male Pipe Thread | Slip-Joint | Sewer & Drain | IPS PE x IPS PE |
| Inlet Diameter (In.) | 1-1/2 | 1-1/2 | 2 | 1-1/2 |
| Compatible Pipe Material | Multi-Purpose | Multi-Purpose | Multi-Purpose | Brass |
| Material | Acrylonitrile Butadiene Styrene (ABS) | Acrylonitrile Butadiene Styrene (ABS) | Acrylonitrile Butadiene Styrene (ABS) | Brass |
| Outlet Diameter (In.) | 1-1/4 | 1-1/2 | 2 | 1-1/2 |
| Application | Non-Potable Water | Sewage | Sewage | Potable Water |
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
Inlet Diameter (In.)
1-1/2
Outlet Diameter (In.)
1-1/2
Product Depth (in.)
2.25
Product Height (in.)
7.15
Product Length (in.)
2.25
Product Width (in.)
2.25
Details
Application
Sewage
Compatible Pipe Material
Multi-Purpose
Connection
Slip-Joint
Features
Corrosion Resistant
Indoor/Outdoor
Indoor,Outdoor
Material
Acrylonitrile Butadiene Styrene (ABS)
Maximum Pressure (psi)
25
Maximum Working Temperature (F)
135
Pack Size
1
Product Weight (lb.)
0.613
Returnable
90-Day
Valve Type
Check
Warranty / Certifications
Manufacturer Warranty
Warranted to the original consumer purchases to be free from defects in material and workmanship for a period of one-year from the date of purchase.
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
Jun 24, 2020
It fit snug around 1.5" PVC pipe. Needed to adjust...
It fit snug around 1.5" PVC pipe. Needed to adjust the clamps a bit for 1.25" pipe. Adjust ALL 4 Clamps, don't rely on the placement as is. After sliding and tightening the clamps into position, there are no leaks or back flow. I'm confident this check valve will extend the life of my new sump pump!
by
Response from JackelJun 29, 2020
Hello NWAtlanta. Thank you for the 5 Star Review and kind words. You are absolutely correct; one should adjust / tighten all four clamps prior to use. Thanks for the tip!
May 12, 2020
Easy to install, works like a charm. Highly recommended.
Easy to install, works like a charm. Highly recommended.
by
Response from JackelMay 16, 2020
Hi Edgar. Thanks for the 5 Star Review and kind words! We really appreciate it.
Apr 17, 2019
this check valve has always worked perfectly for me as I have an active sump pump. I replace the ...
this check valve has always worked perfectly for me as I have an active sump pump. I replace the valve only when I need to repair or replace the pump as a preventative measure. Easy to install.
by
Response from JackelApr 19, 2019
Hi Husky. Thank you so much for this review. This is the highest complement this product can receive: it works. We appreciate your return business and confidence in our product!
Sep 25, 2018
it works!
Easy to install as long as you tighten all 4 rings ;)
by
Response from JackelSep 26, 2018
Hi Johnny. Thanks for the review. We really appreciate your business.
Aug 21, 2018
Easy to install. Works great! With some good measuring, and this easy to clamp on attachment, I...
Easy to install. Works great! With some good measuring, and this easy to clamp on attachment, I was able to swap out pump that had been working very hard for 6 weeks for a new one, in under 4 minutes, avoiding a wet basement!
by
Response from JackelAug 22, 2018
Hi Drainagesolver. Thanks for the great review! We really appreciate your kind words and your business.
Mar 27, 2018
Very good quality check valve. Knowing that a certain percentage of DIYers tend not read the inst...
Very good quality check valve. Knowing that a certain percentage of DIYers tend not read the instructions, I thought I would point something out: You generally see this check valve pictured in a vertical position but that is not how it should be installed. Instead, this valve needs to be installed in the horizontal position. Also, make sure to observe the fluid flow arrow. The instructions are quite clear.
by
Response from JackelMar 27, 2018
Hi WiseShopper. Thanks for the review. We appreciate your business.
Feb 20, 2018
Working
Working
by
Response from JackelFeb 21, 2018
Hi Jack. Thanks for the review. We really appreciate your business
Jun 13, 2017
I installed it on a sump pump 1 1/4" discharge pvc pipe for a backyard drain, and it worked just ...
I installed it on a sump pump 1 1/4" discharge pvc pipe for a backyard drain, and it worked just fine.
by
Mar 28, 2017
I don't have drains in my basement floor (old house) so I need a pump for my laundry discharge. M...
I don't have drains in my basement floor (old house) so I need a pump for my laundry discharge. My old check-valve started leaking--this one replaced it perfectly and does the job.
by
Apr 14, 2016
Good Check Valve
We have installed this check valve when an additional pump was installed in order to avoid back up into the drain pipe connected the main sump pump. It works great!
by
Oct 26, 2021
check valve
it was few rains since check valve was installed and it working fine.
by
Response from JackelOct 27, 2021
Hi leophill2021. Thank you for the 5 Star Review.
Oct 25, 2021
by
Oct 25, 2021
by
Oct 24, 2021
by
Oct 24, 2021
10 ft high pvc run
Check helps stop back flow...
10 ft high pvc run
Check helps stop back flow in the pump
by
Response from JackelOct 24, 2021
Hello Nico. Thanks for the 5 Star Review.
Oct 23, 2021
Easy to install. No problems thus far....
Easy to install. No problems thus far.
by
Response from JackelOct 24, 2021
Hello HomeDepotCustomer. Thanks for the review!
Oct 23, 2021
The sump pump check valve was very easy to install....
The sump pump check valve was very easy to install. Now waiting for rain to see if it works.
by
Response from JackelOct 24, 2021
Hi Gene. Thank you for the 5 Star Review!
Oct 23, 2021
The part was easily installed, but the pipe it was...
The part was easily installed, but the pipe it was attached to had to be cut to provide clearance for the valve. I believe there should have been some instructions provided with the valve to indicate the need to modify the discharge pipe.
by
Response from JackelOct 24, 2021
Hello Jon. Thanks for the 5 Star Review.
Oct 18, 2021
It was easy to install on pump . So far...
It was easy to install on pump . So far so good
by
Response from JackelOct 19, 2021
Hello HomeDepotCustomer. Thank you for the review.
Oct 18, 2021
by
Oct 17, 2021
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by
Response from JackelOct 17, 2021
Hello HomeDepotCustomer. Thank you for the 5 Star Review.
Oct 16, 2021
by
Oct 15, 2021
by
Oct 15, 2021
by
Oct 6, 2021
by
Oct 5, 2021
by
Oct 5, 2021
by
Oct 5, 2021
by
Sep 22, 2021
by
Sep 22, 2021
It was easy to install....
It was easy to install.
by
Response from JackelSep 22, 2021
Hello benny. Thank you for the 5 Star Review.
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