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Model # CDU800

Internet # 203663675

1/2 HP Cast Iron Sump Pump with Vertical Float Switch

This item has been discontinued.
The Home Depot no longer carries this specific product.

$119.99 /each

  • Durable, cast-iron submersible sump pump
  • Vertical float switch for automatic operation
  • Top suction design filters debris and minimizes clogging




Model # CDU800

Internet # 203663675

Wayne's CDU800 features a durable cast iron base and epoxy-coated housing for long life and quiet operation. This submersible pump is designed for small sump pits, as small as 11 in.. The CDU series is one of the most popular replacement sump pumps in America. The ceramic mechanical seal assures long life in the most demanding applications and the 1-1/2 in. discharge allows easy installation. This powerful 1/2 HP sump, pumps up to 4200 GPH.

  • Submersible cast iron and coated steel sump pump with vertical float switch
  • Top suction pump design eliminates air locks and clogging from debris in bottom of sump pit
  • Epoxy-coated steel motor housing and rugged, cast iron pump base
  • Fully submersible
  • 1/2 HP; max. flow rate is 4200 GPH; 3150 GPH at 10 ft. of discharge lift
  • 1-1/2 in. NPT discharge
  • For use in 11 in. Dia or larger sump basins; 9 in. ON level and 4 in. OFF level
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Maximum Pumping Height (ft.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Switch-Off Height (in.) 
Switch-On Height (in.) 
Amperage (amps) 
Battery Back-Up 
Cord Length (ft.) 
Discharge Flow @ 0 ft. (gallons/hour) 
Discharge Flow @ 10 ft. (gallons/hour) 
Discharge Flow @ 15 ft. (gallons/hour) 
Horsepower (hp) 
1/2 hp 
Housing Material 
Maximum Working Temperature (F) 
Minimum working temperature (F) 
Power Type Required 
Product Weight (lb.) 
18.5 lb 
Pump Switch Type 
Sump Pump Outlet Diameter Type 
1-1/2 FPT 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
cUL Listed 
Manufacturer Warranty 


Rated 4.8 out of 5 by 24 reviewers.
Rated 5.0 out of 5.0 by Wayne Sump Pump I did a lot of research on sump pumps and read many reviews of other products. I chose the Wayne Sump Pump from Home Depot on-line as it fit all my requirements to match my old sump pump. 1/2 HP, submersible, external (replaceable) float switch, quality construction, and 3 year warranty. As a bonus it was dimensionally identical to my old pump which made for a direct swap out with minimal alterations to the discharge piping. Mine was a custom setup as I also installed a water powered backup pump so I would be protected in the event of a power outage. I have used Wayne pumps previously and had excellent results. I highly recommend the Wayne products. The on-line transaction with Home Depot was easy and shipping was prompt. April 30, 2015
Rated 5.0 out of 5.0 by received the pump it was easy to install and works great. I received the pump faster than I originally thought so that made me happy and also the installition was very easy to do ..the pump works so good and have no other problems so I am very happy with this purchase...I also bought a 3/4hp shallow well pump and it works great and your customer service was so excellent and they treated me so great...yes I will recommend these pumps to anyone..thanks. August 18, 2015
Rated 5.0 out of 5.0 by Excellent Pump This pump is the exact match to the one that I had previously installed. I didn't realize how loud and poorly my other unit ran until I had this one installed. It is so whisper quiet, you have to watch for the vibration in the PVC pipe as you have a difficult time even hearing it run. I have a reverse osmosis system in the house, which cycles through dozens of gallons when it engages. This pump does an excellent job of keeping up with that sort of volume of water. Downside - to do this right, the installation is a dirty job. We cleaned out the entire sump crock, all the associate piping, etc. Be sure to evaluate your situation before starting the project. It is a good idea to have some good quality Fernco fittings on hand and change all of this out at one time. It is a cheap fix that will pay off long term. The pricing compared to other brands/models was fair and inline with the unit's value. I would purchase this pump again in the future. September 24, 2015
Rated 5.0 out of 5.0 by Awesome Pump Extremely happy with this pump. Super quiet and pumps super fast. Easy install. I read a lot of reviews on different pumps before I decided to purchase this one. The great reviews and the 3 year warranty are what sold me on this one. September 27, 2015
Rated 5.0 out of 5.0 by would recommend Ordered this on Sunday night, it was sitting on my doorstep on Wednesday. My husband installed this in 20 minutes. Piece of cake, he said. And it is so quiet, I didn't think it was working at first. Good purchase! April 19, 2015
Rated 5.0 out of 5.0 by Good solid pump This fit in easily to replace my old pump which had a bad switch that was not practical to fix. This pumps switch could be easily replaced if it should fail and was a quick install. We had torrential downpours twice since installing it and it kept pace with our 200 year old leaky basement. September 15, 2015
Rated 5.0 out of 5.0 by easy to install and running like a champ so far Took it out of the box and had it installed in less than an hour. So far it's been running great. It's outside so I can't really say much about the noise level. overall very happy with it. April 8, 2015
Rated 5.0 out of 5.0 by great purchase easy to install, quiet working, delivered very quickly August 11, 2015
  • 2015-10-03T12:19:31.523-05:00
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