Review of Wayne CDU790 Submersible Pump

WAYNE CDU790 1/3 HP Submersible Cast Iron and Steel Sump PumpIn this article we will be reviewing the CDU790, a 1/3 HP submersible cast iron and steel pump with integrated vertical float switch manufactured by the Wayne Pumps. Before jumping into reviewing this product, submersible pumps and their applications are briefly described below.

Submersible pumps are special kind of pumps, where the whole assembly is submerged into the fluid to be pumped. The motor used in submersible pumps are hermetically sealed and close coupled to the pump body. Submersible pumps can be used for many different applications starting from domestic uses to drilling oil from offshore drilling rigs. The submersible pump used for household applications are generally small in size and runs on little amount of power. It can be used in gardens, yards or rooms for various purposes like removing water from a flooded section of your house.

The CDU790 is priced around $115.00 on Amazon, excluding the installation charges. This sub $150 price bracket is the lowest for submersible pumps in the market. But as for most of the household uses, small sized efficient pumps are required; the demand for sump pumps in this price bracket is steeply increasing. This high demand in this market is drawing attention of many manufacturers, resulting in highly competitive market with lots of products and lower prices.

However, the CDU790 is an excellent sump pump available in the market today. The quality of the pumps produce by Wayne pumps makes it stand out from crowd, with an even more attractive price and a whopping three years of warranty.

Below, the specifications of the Wayne CDU790 pump is mentioned –

  • Dimension – 9 * 9 * 12 inches
  • Weight – 16.4 pounds
  • Horsepower – 0.3 HP
  • Voltage – 100 volts
  • Maximum Gallons per hour – 3800
  • Switch type – Vertical Switch
  • Construction – Cast iron / Epoxy coated steel
  • Warranty – 3 year

The specification of a pumping device merely showcases its purpose of use. How a device performs in real life is another matter altogether. A detailed review of this very product under scanner is described below.

Build – Wayne is known for its superiorly designed submersible pumps. They are known to invest a big amount of money in the design section. The CDU790 is an excellent example of submersible pumps of superior build quality. Moreover, the use of cast iron and epoxy coated steel made the already compact designed submersible pump even lighter, making it perfect for household uses. The use of cast iron and epoxy coated steel also makes this submersible pump immune against corrosion and any possible impact with debris of considerable size. The cast iron base with short legs makes the design practical by making the device stable even on rough surfaces.

Motor – The CDU790, as already mentioned before, comes with a 1/3 hp motor. This power is enough to complete any household tasks at hand. Moreover, the dependable nature of the motors manufactured by Wayne Pumps makes this product even better. This very motor is known to provide flow rate of 3800 gallons per hour at 0’ head and 2700 gallons per hour at 10’ head. To ensure maximum dependability this product is tested for 1 million cycles. As you already know that the submersible pumps work completely submerged in the fluid to be pumped, it makes the motor susceptible to damage with poor sealing. So, to ensure higher longevity of the product, Wayne Pumps are manufactured with high grade ceramic sealing.

Other parts – The impeller of the CDU790 is made of cast iron to ensure adequate support. The vertical float switch used in this pump is made of PVC float system and the shaft and suspension rod is made of steel. Other external parts of this device like discharge, power cable and handle all are made with top notch material to ensure the longevity of the device. However the exquisite design and assembly of these parts by Wayne pumps ensure the absolutely smooth and efficient operation of the pump.


Apart from reviews from technical experts, every day house hold customers and users of this product praised it wholeheartedly. However, few customers mentioned that the handle could have been bigger to ensure better usage and some of the stainless steel parts lacked epoxy coating. In the end, the plethora of pros easily makes this the best budget sump pump out there in the market.

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