Model # CDU790

Internet #100026900

Wayne 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
0040066100016

Wayne

1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch

  • Pumps up to 3800 GPH at 0 ft.
  • Rugged, cast iron base and metal construction
  • Top suction design filters debris and minimizes clogging
$120.07 /each

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Product Overview

Wayne's CDU790 features a durable cast iron base and epoxy-coated housing for long life and quiet operation. This submersible pump is designed for 11 in. or larger sump pits. The CDU series is one of the most popular replacement 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 plus maximum flow.

  • 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
  • 1/3 HP; max. flow rate is 3800 GPH; 2700 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
  • On 9 in. - off 4 in.
  • Assembled in the U.S.A.
  • Additional Features:


  • Click here for more information on Electronic Recycling Programs

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Customer Questions & Answers

20 Questions29 Answers

Customer Questions & Answers

1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch

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4 answers

does this pump require a dedicated electrical circuit?

This question is from 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
Asked by
Germansville, PA
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July 22, 2015
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Answers (4)

Asked by
Raleigh NC
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November 23, 2015
Answer: 
Electrical requirement wise (Building code may require it) i don't think so but safety wise it should be on it's own GFI circuit with a alert type light to let you know if the circuit trips. You can't depend on any pump to run 100% of the time and if you have a serious water problem and the sump pumps stops working and you don't know it damage occurs.
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October 20, 2015
Answer: 
It does not, but I would recommend a GFCI outlet for safety...
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Asked by
Leavenworth
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September 30, 2015
Answer: 
No
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Asked by
Schererville, IN
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July 24, 2015
Answer: 
No, this pump shares electrical circuits with another pump.
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3 answers

Does this pump have a float sensor?

This question is from 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
Asked by
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November 3, 2015
The location for our sump pump requires that it has a float sensor so that we don't have to access it regularly. Does this have one? The specs look like it does but I want to ask before we purchase it.
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Asked by
Oregon
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October 11, 2016
Answer: 
Yes, it has a float switch to turn the pump on and off.
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Asked by
Encinitas, Ca
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July 6, 2016
Answer: 
yes.
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Asked by
Raleigh NC
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November 23, 2015
Answer: 
yes, vertical mounted, not floating in the sump hole - I've had these "floaters" get hung up against the side of the sump hole and run the unit dry - burned out pump.
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3 answers

Can this pump work in a yard with standing water?

This question is from 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
Asked by
Florida
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August 9, 2015
Here in Florida we just had a realy bad storm, I have standing water that has no where to drain I just need a pump for a small back yard the water is setteling at my a/c unit and In the middle of my yard is a slope If I had a hose long enough to go around the side of my home. my front yard has a slope where it can drain. I've never used one of these. Can someone please help me?
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Asked by
Raleigh NC
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November 23, 2015
Answer: 
Yes, but make sure you have a primary debris screen for leaves, and stuff - also make sire you plug into a GFI outlet. For a emergency use you would be ok, but I would not install any sump pump outside there are pumps designed for exposure to the elements.
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October 20, 2015
Answer: 
Possibly...This is designed to sit in a sump pit so that the water level will rise high enough to actuate the float...so if you placed it in a low spot in a basin or sump pit it may help out with the standing water...
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Asked by
Leavenworth
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September 30, 2015
Answer: 
Yes
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2 answers

can this pump be put in a pond to help circulate water

This question is from 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch
Asked by
Huntsville, al
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April 13, 2016
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Asked by
Oregon
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October 11, 2016
Answer: 
I don't see why not, as long as you have a large pond: 800 gallons plus.
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Asked by
Culpeper, VA 22701, USA
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May 5, 2016
Answer: 
It might work but I assume it was not built for continuous use. My pump is on less than 5 minutes at a time.
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Customer Reviews

1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch is rated 4.7 out of 5 by 139.
Rated 5 out of 5 by from Outstanding Purchased on-line via Home Depot. Arrived the next day. All aspects of this is top-notch. Looks like a Zoeller, but a much better price. The float is attached at the bottom, so it won't bounce around and hit the sides. Very quiet, sucks up the water is 5-6 seconds. Use it also for clothes washing machine discharge, but remember to place a steel mesh 'stock" on the end of the discharge hose to catch any lint. Avoid using hot water setting on the washer. Their website actually answered two on-line questions very quickly. The low 1/3 hp is all I need and will not trip any GFI.
Date published: 2016-08-20
Rated 5 out of 5 by from Solid well built pump My Flotec sump pump finally went south. Had it for over 20 years with no problems. So, needed to replace it. After searching the reviews on some pumps, no question to get a Wayne. It matched up perfectly without having to modify any plumbing. I got a vertical switch this time, since the sump pit is square and not enough room for a tethered switch. I had to shorten the tether on my previous pump. I also like the vertical switch keeps the water level quite a distance below the floor. Good quality pump.
Date published: 2016-02-13
Rated 5 out of 5 by from Quality Product, Easy Installation I ordered this sump pump online from Home Depot, as it was not available in stores. The reviews were very positive for this unit, and the price was about what I wanted to spend. The unit arrived in three days after ordering, which was great considering the shipping was free. This sump pump replaced a sump pump whose switch had failed. Including cutting new PVC pipe and cleaning out the sump pail, the installation took less than one hour. The units looks very solidly built, and I like that the suction is from the sides rather than from the very bottom--makes it much less likely to clog up. The unit runs quietly, and the cord length is more than ample. Overall, very happy with the purchase.
Date published: 2013-10-16
Rated 1 out of 5 by from Do NOT buy wayne sump pumps with the outer exposed bolts. I had this in my water softener dump p... Do NOT buy wayne sump pumps with the outer exposed bolts. I had this in my water softener dump pit, after about 6-7 years all the bolts will rust right through and the entire motor will snap apart when you least expect it leaving it in pieces and non-functional. I have a watch dog in my other pit that ejects water from foundation tiles and it's still running strong and quiet because it has a solid casted outer housing.
Date published: 2016-11-10
Rated 5 out of 5 by from The weight of this pump is important to me because the previous pumps I had in the sump well move... The weight of this pump is important to me because the previous pumps I had in the sump well moved when the pump started. This sometimes caused the float switch actuator to wedge itself against the well wall. Then until I reset the pump position it either continued to run when the water was all pumped out, or didn't run at all if it was wedged in the off position.
Date published: 2016-12-28
Rated 5 out of 5 by from The product arrived on time and seems to work fine (only in use for 1 month). It is very quiet a... The product arrived on time and seems to work fine (only in use for 1 month). It is very quiet and moves a lot of water. The data sheet says line cord is 10 feet, although mine came in at 7 feet. It was long enough for my installation, but data sheet should be updated to reflect actual product. Otherwise I'm very happy with the purchase.
Date published: 2017-01-10
Rated 5 out of 5 by from I've used this particular Wayne pump before and got great service from it. I just purchased a ne... I've used this particular Wayne pump before and got great service from it. I just purchased a new one as the old one was 7 years old and I felt it was taking a little too long to pump out and was getting noisy. The new one is much faster and quiet. I can't complain about how long the old pump lasted as it had to run almost daily.
Date published: 2016-12-10
Rated 4 out of 5 by from Sump pump worked as planed. The box was beat up but the pump was fine. I had a slight problem with the level switch. It stuck when I first tried it. I operated the switch by had about 20 times and it quit hanging up. The switch did not turn the pump off at first. It works great now.
Date published: 2016-10-04
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