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Little Giant 509020 Simplex Sump Pump Package 20X30 Basin Pre-Assem W/ Alarm

SKU: 104831

Save 42% · Retail: $1,101.00

  Available to Ship in 3-4 weeks

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About the Little Giant 509020

Little Giant 9S-Smpx-Lg1A Is A 20" X 30" Structrual Foam Basin, 2 Piece Cover And Pump. This Package Is Ideal For Collection Of Sewage, Effluent, Drainage And Seepage Water. Suitable For Homes, Farms, Light Commercial And Industrial Use. Pre-Assembled Units Are Provided Completely Assembled And Ready To Be Installed.

Product Details

Product: Sump
Manufacturer: Little Giant
Mpn # 509020
Weight 64.00 lbs.

Product Features

  • 115 Vac 60 Hz Single Phase 15 Foot Cord
  • Two-Piece Structural Foam Cover With 2" Vent & Discharge
  • 4/10 Horse Power
  • 80 Gallon Per Minute At 5 Foot 18 Foot Max Height
  • Sewage Ejector Pump Handles Liquids And Solid Waste Materials Up To 2" Diameter
  • Remote Float Switch For Dependable Automatic Operation.
  • Large capacity (45 gallon) roto-molded polyethylene basin
  • Molded Anti-Torque Pump Stops
  • 4" Molded External Inlet Hub To Accept Flexible Coupling
  • Cv-Se2, 2" Full-Flow Check Valve, Hwab, Indoor High Water Alarm Included



4.5 out of 5 rating is our rating for PlumbersStock, we got that rating because we have lots of experience and great people with expertise in plumbing. BUT WE WANT YOUR HELP. This product doesn't have any reviews yet, and we don't want to write our own reviews. It is more valuable to us that the customers get to share their experience with our products. Please, if you have any experience with this product, take a moment to share and help someone else who is trying to make a decision. Thank you!

Questions & Answers


We appreciate your interest in our Little Giant 509020 simple sump pump package 20X30 basin pre-assembled with alarm. According to Little Giant's technical support, this product is a pre-packaged system that might be used with an existing system. For example, if you're adding a bathroom that doesn't have a gravity drain to the existing system and needs to be pumped. You may contact Little Giant @ 1-800-701-7894 if you need further assistance. Click on Add to Cart whenever you want to purchase this pump. Thanks for choosing as your online shopping buddy!


Hi, there! Thank you for inquiring with us. As for sump pumps like your Little Giant 509020, the first thing you'll have to do is to inspect the possible areas where debris might accumulate. Please take a look at this guide for further details with regards to fixing sump pumps. Thank you and we hope to see you again here at!


Good day! In response to your inquiry about the Little Giant 509020 Simplex Sump Pump Package, sorry for what happened. The float switch that turns the alarm on is a tethered float switch. When it is up, the alarm is on. When it is down, the alarm turns off. If your alarm does not turn off, you need to disconnect the switch wires from the control module. If the alarm turns off, check the float switch. If the alarm remains on, you'll need to replace the whole unit. We hope that this helps. Please don't hesitate to contact us if you have any further question about this product. We thank you for choosing We are always happy to help you!

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