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The Best

Sewage Pumps

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SaleBestseller No. 1
Wayne RPP50 Cast Iron Sewage Pump with Piggy Back Tether Float Switch, Black
  • 1/2 hp; max. Flow rate is 6200 gallons per hour; 3240 gph at 10 ft. Of discharge lift
  • Durable, cast iron submersible sewage pump
  • 2 in. Npt discharge capable of handling up to 2 in. Solids
  • Ideal for basement or below grade installations
  • Bottom suction design passes solids up to 2 inches large
SaleBestseller No. 2
Zoeller Waste-Mate 267-0002 Sewage Pump, 1/2 HP Non-Automatic – Heavy-Duty...
  • Zoeller Waste-Mate 267 is a heavy-duty submersible sewage, effluent, or dewatering...
  • Ideal for residential & commercial use; Passes 2" spherical solid waste with plastic...
  • Switch-operated sewage pump with a 2-pole mechanical switch & non-clogging vortex...
  • Durable cast engineered construction utilizes ASTM Class 25 cast iron for switch case...
  • Constructed in the USA with a limited 3 year warranty
Bestseller No. 3
Liberty Pumps P382LE41 Pro380 Series Simplex Sewage System, Gray
  • Pumps
  • Manufacturer: Liberty Pumps
  • Country of Manufacturer: United States
SaleBestseller No. 4
Wateclyn 1/2 HP Cast Iron Submersible Sewage Ejector Pump, Sewer Pump, Septic Tank...
  • 1/2 hp; max. Flow rate is 5900 gallons per hour; pump will lift water up to 26ft. of...
  • 2 in. discharge capable of handling up to 2 in. Solids.
  • Durable Rugged cast iron construction with 10' power cord length.
  • Piggy Back Tether float switch cable length is adjustable for automatic operation.
  • 100% factory tested, 1 year limited warranty.
SaleBestseller No. 5
Superior Pump 93501 1/2 HP Cast Iron Sewage Pump with Tethered Float Switch, 0.5,...
  • 1/2 HP Sewage pump moves up to 4,800 gallons per hour; pump will lift water up to 25'...
  • Rugged cast iron construction; 10' cord length
  • Tethered float switch to automatically turn the pump on/off.
  • 2 inch NPT discharge, will handle up to 2 inch solids and features a non-clogging...
  • Superior Pumps are Built to Last, engineered with quality components and are 100%...

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Buyer's Guide: Sewage Pumps

Sewage Pumps

Sewage pumps are pumps for transferring sewage and wastewater. They are used in the sewage treatment plants of towns and cities. Besides sewage treatment plants, they are also used in private homes and buildings which, due to topography, cannot be connected to the city sewage plant or municipal sewer. Sewage pumps are installed at the lowest point of a sewage basin, from where they pump waste to the septic tank or sewer system. Since they are submerged, they are also called submersible sewage pumps.

There are different kinds of sewage pumps such as, the centrifugal pumps, the reciprocating Pumps, and the pneumatic ejectors or air pressure pumps.

Centrifugal pumps are used for lifting sewage. As its name implies, the centrifugal pump utilizes the centrifugal force. Sewage, on entering the pump, is revolved at high speeds by impellers. The velocity of the rotation creates a pressure that moves the sewage through the delivery pipes.

Centrifugal pumps are affordable, easy to install, can withstand high pressures, and are quite resistant to clogging. However, the pump's flow rates cannot be regulated, and they cannot run without priming.

The second type of pump listed, the reciprocating pump, is used for pumping large quantities of sewage at a low pressure. The advantages of the reciprocating pump are that it is durable, and able to pump huge quantities at low pressure. The disadvantages are its high cost of installation and maintenance. It is unsuitable for transferring wastewater with high levels of solid content.

The third type of sewage pump listed, the pneumatic ejector or air pressure pump, is used for pumping small quantities of wastewater. It is fitted with a tight tank into which flows the wastewater under gravity. When the wastewater has reached sufficiently high levels such that it raises a float, the wastewater is flushed out.

The pneumatic ejector pump is not easily clogged, it requires little supervision while in operation, and it is affordable for sewage disposal involving small quantities of wastewater. Its disadvantage, however, is that its efficiency is low, about 15%.

There are also different kinds of sewage pumps based on the kinds of impellers they have. There are pumps for dry installation with a single-vane impeller, submersible

motor pumps with a single-vane impeller, close-coupled pumps, torque flow pumps with a free-flow impeller, and sewage Pumps with a diagonal impeller.

To maintain and keep sewage pumps in proper running condition, clogging must be prevented. It is essential, even when solid materials are high in the slurry, to keep the pump from clogging. The impellers, the single-vane and diagonal-vane impellers are designed to keep this from happening.

It is also important that sewage pumps are wear-resistant. To make sure of this, sewage lifting units are fitted with replaceable wear-resistant components like the casing wear ring, wear plate, and the impeller wear ring. The types of wear-resistant components added to the pumps depend on the kind of slurry (precisely, the level of solid content in the wastewater) being transported.

Sewage pumps have several benefits. Apart from pumping wastewater to the sewer system, they also prevent flooding, damp and mildew.