

CDU790 - 1/3 HP Epoxy Coated and Cast Iron Submersible Sump Pump
Key item features
- Robust Construction: Features durable epoxy-coated and rugged cast iron construction, along with a cast iron seal plate to prevent leaks and galvanic corrosion, ensuring longevity in demanding sump pump applications.
- Efficient Performance: Offers a maximum discharge flow of 3450 gallons per hour (GPH) and a maximum pumping height of 21 feet, powered by a 1/3 HP motor for effective water removal.
- Integrated Automation: Equipped with an integrated vertical float switch, featuring a solid, leak-free polypropylene float for automatic operation with a 9-inch ON level and 4-inch OFF level.
- Advanced Design: Incorporates a unique top suction design to reduce clogging and prevent air lock, eliminating the need for weep holes, and includes an abrasion-resistant glass-reinforced polycarbonate impeller.
- Quiet Operation: Engineered with upper and lower ball bearings in a sealed oil bath and premium John Crane carbon/ceramic shaft seals for virtually silent operation.
- Convenient Installation: Designed for easy installation in 11-inch diameter or larger sump basins, featuring a 1-1/2 inch NPT discharge for compliance with building codes.
Specs
- Plumbing pump typeSump Pumps
- Horsepower0.33 HP
- Gallons per minute63 GPM
- Power typeCorded Electric
- BrandWAYNE
- Volts120.0 V
- Free shipping
Free 30-day returns
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About this item
Product details
1/3 HP Epoxy Coated and Cast Iron Submersible Sump Pump
- Assembled in the US with foreign and domestic parts
- Tested to 1 million cycles*; For performance that lasts, WAYNE Pumps exceeds an average life of 1 million cycles
- WAYNE Pumps' energy efficient motors, and engineered design provide the ultra-quiet experience you won't believe. The Hardest Working Pumps, You'll Never Hear™.
- Durable epoxy-coated and rugged cast iron construction, for long life in tough sump pump applications
- High performance; max. flow rate is 4600 Gallons Per Hour; 3060 GPH at 10 ft. of discharge lift
- Integrated Vertical Float Switch with Solid, Leak Free Polypropylene Float for automatic operation; 9 in. ON level and 4 in. OFF level
- No need for weep holes; Unique Top Suction Design reduces clogging and prevents air lock condition
- Engineered with Upper and lower ball bearings, in sealed oil bath, for virtually silent operation
- Designed with Premium John Crane Carbon/Ceramic Shaft Seals for quality that lasts.
- Cast Iron Seal Plate Prevents Leaks and Galvanic Corrosion
- 1-1/2 In. NPT Discharge for compliance with building codes
- 120 V, PSC, Oil-Filled 1/2 HP Motor
- Float Guard, Protects Switch from Hang-Ups from Debris and side of pit
- Abrasion Resistant Glass Reinforced Polycarbonate Impeller for Reliability
- 8 ft Water Resistant Power Cord provides easy access to nearby GFCI protected outlet
- For easy installation, use in 11 in. diameter or larger sump basins.
- UL agency approved
- 3 Year Limited Warranty
- Horsepower: 1/3 hp. Product Type: Sump Pump. Maximum Discharge Flow: 3450 gph. Hp: 1/3 hp. Power Source: AC. Battery Backup: No. Assembled Width: 60 in.. Cord Length: 8 ft.. Assembled Length: 60 in.. Voltage: 120 volts. Amperage: 9.5 are. Maximum Pumping Height: 21 ft.. Pump Switch Type: Vertical. Housing Material: Plastic. Assembled Height: 60 in.. Self Priming: Yes. UL Listed: Yes. Packaging Type: Boxed. Submersible: Yes. Sump Pump Outlet Diameter: 1-1/2 in..
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Specifications
Plumbing pump type
Horsepower
Gallons per minute
Power type
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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| Product | Viewing this itemCDU790 - 1/3 HP Epoxy Coated and Cast Iron Submersible Sump Pump ![]() $154.99 current price $154.99234.6 out of 5 Stars. 23 reviews | Wayne SPF Series 1/3 HP 115V Submersible Sump Pump SPF33-57610 ![]() $123.25 current price $123.2564.8 out of 5 Stars. 6 reviews | Wayne 3/4 HP 115V Submersible Sump Pump CDU980E ![]() $219.99 current price $219.99374.8 out of 5 Stars. 37 reviews | Wayne 1/3 HP Stainless Steel Sump Pump CDU790SS ![]() $177.97 current price $177.9734.7 out of 5 Stars. 3 reviews | Superior Pump 92541, 1/2 HP, 4.9 Amps, 115 V, Black Electric Water Sump Pump ![]() $145.96 current price $145.96224.5 out of 5 Stars. 22 reviews | Superior Pump 92372 1/3 HP Thermoplastic Submersible Sump Pump with Vertical Float Switch, Black, 9.25” x 6.25” x 11.75” ![]() Now $117.16 current price Now $117.16, Was $136.62$136.62 33.7 out of 5 Stars. 3 reviews | Wayne 1/2 HP 5,100 gph Cast Iron Vertical Float Switch AC Sump Pump ![]() $548.95 current price $548.9584.6 out of 5 Stars. 8 reviews |
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| Plumbing pump type | Sump PumpsCDU790 - 1/3 HP Epoxy Coated and Cast Iron Submersible Sump Pump | Submersible Sump PumpWayne SPF Series 1/3 HP 115V Submersible Sump Pump SPF33-57610 | Sump PumpsWayne 3/4 HP 115V Submersible Sump Pump CDU980E | Submersible Sump PumpWayne 1/3 HP Stainless Steel Sump Pump CDU790SS | Water Sump PumpSuperior Pump 92541, 1/2 HP, 4.9 Amps, 115 V, Black Electric Water Sump Pump | Water Sump PumpSuperior Pump 92372 1/3 HP Thermoplastic Submersible Sump Pump with Vertical Float Switch, Black, 9.25” x 6.25” x 11.75” | Sump PumpsWayne 1/2 HP 5,100 gph Cast Iron Vertical Float Switch AC Sump Pump |
|---|---|---|---|---|---|---|---|
| Horsepower | 0.33 HPCDU790 - 1/3 HP Epoxy Coated and Cast Iron Submersible Sump Pump | 0.33 HPWayne SPF Series 1/3 HP 115V Submersible Sump Pump SPF33-57610 | 0.75 HPWayne 3/4 HP 115V Submersible Sump Pump CDU980E | 3 HPWayne 1/3 HP Stainless Steel Sump Pump CDU790SS | -Superior Pump 92541, 1/2 HP, 4.9 Amps, 115 V, Black Electric Water Sump Pump | -Superior Pump 92372 1/3 HP Thermoplastic Submersible Sump Pump with Vertical Float Switch, Black, 9.25” x 6.25” x 11.75” | 2 HPWayne 1/2 HP 5,100 gph Cast Iron Vertical Float Switch AC Sump Pump |
| Gallons per minute | 63 GPMCDU790 - 1/3 HP Epoxy Coated and Cast Iron Submersible Sump Pump | 50 GPMWayne SPF Series 1/3 HP 115V Submersible Sump Pump SPF33-57610 | 94.5 GPMWayne 3/4 HP 115V Submersible Sump Pump CDU980E | 4600 GPMWayne 1/3 HP Stainless Steel Sump Pump CDU790SS | 55 GPMSuperior Pump 92541, 1/2 HP, 4.9 Amps, 115 V, Black Electric Water Sump Pump | 48 GPMSuperior Pump 92372 1/3 HP Thermoplastic Submersible Sump Pump with Vertical Float Switch, Black, 9.25” x 6.25” x 11.75” | 5100.0 GPMWayne 1/2 HP 5,100 gph Cast Iron Vertical Float Switch AC Sump Pump |
| Power type | Corded ElectricCDU790 - 1/3 HP Epoxy Coated and Cast Iron Submersible Sump Pump | Corded ElectricWayne SPF Series 1/3 HP 115V Submersible Sump Pump SPF33-57610 | Corded ElectricWayne 3/4 HP 115V Submersible Sump Pump CDU980E | Corded ElectricWayne 1/3 HP Stainless Steel Sump Pump CDU790SS | Corded ElectricSuperior Pump 92541, 1/2 HP, 4.9 Amps, 115 V, Black Electric Water Sump Pump | Corded ElectricSuperior Pump 92372 1/3 HP Thermoplastic Submersible Sump Pump with Vertical Float Switch, Black, 9.25” x 6.25” x 11.75” | Corded ElectricWayne 1/2 HP 5,100 gph Cast Iron Vertical Float Switch AC Sump Pump |
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Customer ratings & reviews
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Showing 1-3 of 22 reviews
Seller Verified Purchase
Great pump, works as needed!
I've tried a handful of submersible pumps as we run them 24 hrs a day but this is the only one that seems to be able to keep up the pace with our needs. Highly recommend!
Seller Verified Purchase
My first sum pump was a Wayne. It provided many years of dependable service, but as age and use took its toll it failed. I bought another brand from a neighbor who was moving, but it did not serve the purpose well. When it prematurely failed I had to replace it quickly, and found another Wayne. This pump has been in service several years and when I saw the ad for this pump I ordered it as a backup. I learned that it better to stick with quality in the long run.
Verified Purchase
Efficient and quiet
Pump is very efficient and quiet. The last one I bought (same model) has been working for 6 years with no problems. The sump this pump is located in is also a harsher duty than most sumps since the drain in front of my garage doors drain into it. As long as you keep up with the sump cleaning (once a year), this pump has performed flawlessly.







