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💧 Stay dry, stay ahead — the Drainosaur Jr. keeps your space flood-proof with effortless power!
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, laundry trays, and wet bar sinks. Designed for easy installation and reliable, continuous operation, it includes multiple adapters and a removable filter trap but requires separate check valve and discharge piping.































| ASIN | B0018LB522 |
| Best Sellers Rank | #83,243 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #83 in Sump Pumps |
| Brand Name | Little Giant |
| Color | Black/Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (365) |
| 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!
J**S
Very good
Is good.
J**.
this is not packaged to ship from the manufacturer it usually arrives broken
This pump is in my basement and working well doing its job emptying my clothes washing machine and pumping the water up to the ground floor sewer drain. It arrived with broken parts, I reordered and a few days later the second one arrived with the exact same broken parts. The cast iron pump is only held in place by a 6" long 1-1/2" plastic pipe which snaps off during shipping and the now loose pump then destroys the delicate filter as well. I didn't want to order a 3rd pump so I found the parts (113024 drainage pipe and 113131 intake screen) online and ordered. The supplier I found it turned out didn't have the pipe in stock and after waiting 2 weeks in desperation found a somewhat easy fix: I went to Lowes and bought a pvc adapter (lowes 331503 $2.30) screwed it into the pump, cut the old broken pipe on my table saw to APPROXIMATELY 4-1/2 inches slipped it into the adapter without glue put the lid on without the broken strainer (I put a nylon stocking on the end of the wash mach hose for a filter). it was all plumbed up ready to go by plumbers before we knew it was broken so tighten on clamp, plug it in and it worked perfectly. i gave ease of installation 1 star for obvious reasons. i saw other reviews and this pump seems to arrive broken pretty often. it needs to packed differently inside the pump but then the purchaser would have to remove the packing and assemble the top half onto the base whidh is easy but not everyone would be happy about having to do that.
D**N
Compact and tidy.
This has an easy to clean filter to prevent washer lint from gumming up the float. The pipe fittings are threaded and only one electric wire goes through the and it's built into the fitting that you can see pressed in. If it backs up for any reason, and I tested it by unplugging it, the water will fill the sink and not run out all over the floor the way the larger and way less attractive pump basin did. If you need a pump for a below sewage system laundry tub drain, this is a very good idea. A smaller basin will run more often, but I'm very happy with the trade-off.
R**H
Solid, American made, nice quality
Used in cabinet under sink. No way to reasonably drain sink by gravity into existing under floor sewer drain. Tried a smaller none American (French) pump with claimed similar hydraulic performance. Would not work as pump did not achieve claimed performance. French pump was chosen for a smaller size. But, if it cannot pump, then it goes back. This Little Giant works perfectly. Lid has a removable strainer to catch solids. I'll update if any problems.
W**Y
It was just what I ordered. Had to replace an existing one . Fit right in.
Trustpilot
1 month ago
2 days ago