Flotec Submersible Water-Powered Emergency Backup Sump Pump-FP480WBU at The Home Depot
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Model # FP480WBU

Internet # 100665944

Store SKU # 764677

Submersible Water-Powered Emergency Backup Sump Pump

Flotec Submersible Water-Powered Emergency Backup Sump Pump

This item has been discontinued.
The Home Depot no longer carries this specific product.

$74.25 / each
Item cannot be shipped to the following state(s): GU,PR,VI


In Stock



Model # FP480WBU

Internet # 100665944

Store SKU # 764677

Store SO SKU # 1000897445

Keep your basement dry in case of a power outage with the help of the Flotec Submersible Emergency Sump Pump. Ideal for use in 10 in. or larger basins (not included), the pump uses municipal water pressure to create suction. And relieve your primary pump (not included) before it overflows, pumping 230 GPH at 10 ft. lift.

  • Pumps 230 GPH at 10 ft. lift and 127 GPH at 15 ft. lift (300 GPH at 0 ft. lift)
  • Uses municipal water pressure, not electricity, for reliable operation in case of a power outage
  • Home water pressure is used to create suction for high draining power
  • Designed to automatically relieve the sump (not included) before an overflow occurs
  • Compact design fits alongside your existing 10 in. or larger basin (not included)
  • Includes a 1-1/4 in. NPT coupling, a vacuum breaker, a connecting hose and an automatic inlet valve

Info & Guides

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Amperage (amps)  Assembled Depth (in.)  12 in 
Assembled Height (in.)  5 in  Assembled Width (in.)  5 in 
Battery Back-Up  No  Cord Length (ft.)  0.0 
Discharge Flow @ 0 ft. (gallons/hour)  300  Discharge Flow @ 10 ft. (gallons/hour)  230.0 
Discharge Flow @ 15 ft. (gallons/hour)  127.0  Horsepower (hp)  0 hp 
Housing Material  Thermoplastic  Manufacturer Warranty  1 year 
Maximum Pumping Height (ft.)  20.0  Maximum Working Temperature (F)  70.0 
Minimum working temperature (F)  33.0  Power Type Required  AC 
Product Depth (in.)  12.2  Product Weight (lb.)  8 lb 
Pump Switch Type  Vertical  Returnable  90-Day 
Self-Priming  Yes  Submersible  Yes 
Sump Pump Outlet Diameter Type  1-1/4 FPT  Switch-Off Height (in.) 
Switch-On Height (in.)  Voltage (volts) 


Rated 2.7 out of 5 by 12 reviewers.
Rated 5 out of 5 by Read instructions and no leaks I installed this pump 4 years ago and it has saved my basement 3 times when we lost power and most of my neighbors' basements flooded. Our town has a high water table and many people's basements flood during power outages. After re-grading and installing 25' downspout extensions, we still get high water flow into the sump. I had a battery back-up and even installed an oversized deep cycle marine battery and only got 4 hrs at best. But what good is 4 hrs if you aren't home? A portable generator is useless unless you are home! I can't justify and don't have $3,000 for an automatic generator, so I decided to try this pump. I read all the reviews about the valve leaking and yes, it happened to me too. Called manuf. and they told me to check my water pressure, it can't exceed 60 psi. (just as the manual said, but I didn't know my pressure was that high) I checked and my pressure was over 90. I installed a pressure regulator and set pressure to 55, problem solved! Hasn't leaked since. So when I read these reviews, I can bet their pressure is too high. Anyway, for $100, it saved my basement every time my neighbor's homes flooded. My neighbors asked how do u survive the outages without flooding and no generator? Now they are finally ditching the battery pumps and asking, "what is that pump thing you have?" Installation was EZ too. Bought 25' of pex tubing and solderless pressure fittings for the connections, tapped into a cold water line nearest the sump. I installed a shut off valve also. (all shown in pic) Total cost was $187 and I couldn't be happier once I fixed the water pressure. By the way, if your water pressure is over 75 psi, you could damage your plumbing system so checking it anyway is a good thing. The pressure regulator was an add'l $70. It connects at your main line right before the meter. If you buy this and install it correctly, it will save you from flooding. Also make sure your rain downspouts are discharging water at least 10 feet or more from your foundation. January 11, 2013
Rated 5 out of 5 by Sump Pump water backup system Everything was as expected with no surprises. Works well for the price. August 26, 2014
Rated 5 out of 5 by Great back-up sump pump I had a different back-up sump pump and mine only lasted 13 yrs. I purchased this Flotec and it is much better quality and works much better. The one thing you have to do with any back-up pump is run it weekly or semi-monthly because hard water will build up and it may not come on right away because of the build -up. Great pump can't say enough about it. And my electric pump runs all the time so having a back-up when power goes out is peace of mind. May 29, 2011
Rated 4 out of 5 by It's a good back-up for my primary when the power goes off! I bought the complete package, though I only needed the automatic valve. I could not find a replacement for my old valve (5 yr.s) anywhere !!!! January 28, 2014
Rated 4 out of 5 by works decent I installed this pump and a few months later I noticed it was letting water slowly pass by the on/off valve constantly. I read the other review that said they put a pressure regulator to keep pressure below 60psi and theirs has been working well. I did the same thing, bought a few fittings and put an RV water regulator on mine for about $15 and the on/off valve stopped letting water slowly pass. (not sure if the RV regulator is a good idea but it is working for now) my house water pressure measures at 75psi with a static pressure test. the RV regulator reduced pressure at the sump valve to 45psi. The emergency pump is slower than it was because of the reduced pressure, but it stopped letting water pass and still empties the sump pit. Overall this is a decent product, but I would have saved a lot of frustration and time if they mentioned the sump valve can't handle water pressure above a certain psi. February 28, 2013
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