Wayne 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch CDU790


1 in stock

SKU: 7970 Categories: , Product ID: 59700


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.


Maximum Pumping Height (ft.): 21
Product Depth (in.): 10
Product Height (in.)” 14
Product Width (in.): 10
Switch-Off Height (in.): 4″
Switch-On Height (in.): 9″


Amperage (amps): 9.5
Cord Length (ft.): 8
Discharge Flow @ 0 ft. (gallons/hour): 3800
Discharge Flow @ 10 ft. (gallons/hour): 2700
Discharge Flow @ 15 ft. (gallons/hour): 1700
Features: Non-Clogging,Submersible
Housing Material: Cast-Iron
Impeller Material: reinforced poly carbonate
Maximum Horsepower (hp): .33
Maximum Working Temperature (F): 120
Minimum working temperature (F): 40
Power Type Required: AC
Product Weight (lb.): 16.95 lb
Pump Switch Type: Vertical
Sump Pump Outlet Diameter Type: 1-1/2 FPT
Voltage: 120v

Additional information

Weight 17 lbs
Dimensions 10 × 10 × 14 in
Minimum 4 characters