









💧 Stay dry, stay ahead — the Drainosaur Jr. pumps up your peace of mind!
The Little Giant WRSC-6 Drainosaur Jr. is a compact, preassembled sump pump system featuring a 1/3 HP cast iron submersible pump with a 3.5-gallon corrosion-resistant basin. It automatically activates via an integral diaphragm switch to pump up to 2760 gallons per hour with an 18-foot lift capacity, ideal for under-sink drainage and tight spaces. Designed for easy installation and reliable, continuous operation, it’s a trusted solution for managing water in laundry trays, sinks, dehumidifiers, and more.































| ASIN | B0018LB522 |
| Best Sellers Rank | #73,688 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #71 in Sump Pumps |
| Brand Name | Little Giant |
| Color | Black/Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (363) |
| Flow Rate | 46 Gallons Per Minute |
| Global Trade Identification Number | 00010121060654 |
| Included Components | Product Only |
| Item Dimensions L x W x H | 14.5"L x 14.5"W x 10.55"H |
| Item Type Name | Pumps |
| Item Weight | 6.1 Kilograms |
| Manufacturer | Franklin Electric Co., Inc |
| Manufacturer Warranty Description | 3 year manufacturer |
| Material Type | Cast Iron, Polypropylene (PP) |
| Maximum Lifting Height | 18 Feet |
| Model Number | 506065 |
| Power Source | Corded Electric |
| Product Style | 3.5-Gallon, 1/3 HP |
| UPC | 010121060654 |
| Unit Count | 1.0 Count |
| Voltage | 115 Volts |
P**Z
A drop in replacement for the one installed by the plumber
Since we ordered the exact same pump to replace the old one, this was an easy job. The micro switch behind the diaphragm (internal) in the original pump finally died after 4 years of constant use. Comes with all fitting/adapters etc. In less than 10 minutes, we were back in the action. Very easy to install, too! This pump easily handles our 3 bay sink in a food-service application - where no drain line exists. Running to an overhead line, across the building to an actual drain was our only choice. This pump works all day pumping a 15' head through about 150' of 2" pipe to get the water where it needs to go. A life saver when there are no other options! Two thumbs up 👍
T**Y
Perfect Under-Bar Pump
Build Quality: I got this to replace the previous one that was at least 10 years old. Leakage: Did not leak at all. Size: Fits perfectly under the sink of our basement bar. Value for the Money: definitely worth the money.
M**O
This little guy is a miracle in a basin!
Extremely happy with this! I used this to reroute water up 6 feet, out my laundry room wall, and joined it onto the end of the line of my septic line about a foot from the wall exit. I attached a check valve right past the pump, a ball valve half way up the exit pipe and a back flow preventer at the septic pipe. It works so well, such a relief. Was able to bypass a sneaky gray water line the previous owner had put in our home and did not disclose. This little pump is a saint! You do not need to open the lid of it, unless you plan to put the p trap inside it, which I did not. It immediately work, first time water entered it! Must have! Very happy!
3**H
Great pumps!
This purchase was to replace an existing Little Giant we installed nearly 20 years ago. Although the old pump still worked and over the nearly 20 years of service I had taken it apart to replace the pressure switch once it was becoming a bit noisy. When it went on sale during Prime Days, I could not pass up the opportunity to replace it. These are great grey water pumps, we have it hooked to a utility sink that our washer drains into. I would not be surprised to see another nice long service run from the new pump! Highly recommend!
C**R
Easy to install..
Easy to install, works good for a laundry or sink
L**N
fast delivery
great product
E**T
mini ejector pump
good pump for the price also good name brand
R**H
Works great
My last one lasted 30 yrs and worked great. So bought another of the same.
W**Y
It was just what I ordered. Had to replace an existing one . Fit right in.
Trustpilot
2 weeks ago
1 month ago