Automatic Sump/Effluent Pump w/ Vertical Float Switch, 10' cord, 1/3 HP, 115V

Liberty Pumps

Brand: Liberty Pumps

Mfr Part#: 257

UPC#: 671812002577

Availability: In Stock
Usually ships: within 1 business day
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$138.60 / each & Free Shipping
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  • Description
  • Literature
  • Reviews (7)
  • FAQs

Liberty Pumps 257 is a 1/3HP Automatic Submersible Sump Pump with with magnetically operated vertical float VMF switch and 10ft power cord. Turn-on level of the not adjustable switch is 7" and turn-off level is 3-1/2". This pump can operate in a smaller 10" diameter sump pit.


The Liberty Pumps 257 has 1-1/2" NPT discharge, 1/2" solids-handling, 18' shut-off head, a unique one-piece cast iron housing and thermally protected & permanently lubricated motor.


For Sump and De-watering Applications only. This Vertical Magnetic Float (VMF) model is not recommended for effluent applications due to their short On/Off cycle. Wide angle float models (Liberty Pumps 251 and 253) are better suited for effluent applications and are easily adjustable for different On/Off levels.


For added protection, consider the addition of a back-up pump such as Liberty's SJ10 SumpJet, as well as an alarm such as Liberty's ALM-2 in applications where loss of pump function could result in property damage. If an alarm is used, it must be connected to a separate electrical circuit.


CAUTION: Do not let the pump run dry.


  • Rugged 1/3 HP motor, oil filled with thermal overload protection;
  • 1/2" solids handling;
  • 1-1/2" discharge;
  • Hermetically sealed motor and switch cavities, and permanently lubricated bearings;
  • Liberty's UNI-BODY casting - a solid, onepiece housing that eliminates the lower motor seal ring found on other pumps;
  • Epoxy powder coat finish;
  • Vortex style impeller for superior solids-handling. Made of high temperature engineering polymer;
  • Quick-disconnect 10' standard power cord allows replacement of cord in seconds without breaking seals to motor;
  • Fasteners - all non-corrosive stainless steel;
  • 416 stainless steel rotor shaft;

Technical Specifications:

  • Horsepower: 1/3 HP;
  • Cord length: 10';
  • Discharge: 1-1/2";
  • Solids Handling: up to 1/2";
  • Shut-off Head: 18';
  • Voltage: 115V;
  • Amps: 5.2;
  • Hertz: 60 Hz;
  • Phase: 1;
  • Maximum fluid temperature: 140°F;
  • Height: 10.5";
  • Width: 9.6";
  • Weight: 23 lbs.;
  • Minimum pit/basin diameter: 14" in Sump and 18" in Effluent applications;
  • Minimum pit/basin depth: 18" in Sump and 24" in Effluent applications;


3 years manufacturer's warranty
Automatic Sump/Effluent Pump w/ Vertical Float Switch, 10' cord, 1/3 HP, 115V has an average 4.9 out of 5 rating based on 7 user reviews.
4 of 4 people found this review helpful.
Quality and built like a tank
By CornDawg (from Granville, IL) on 7/18/2011
On the hunt for a new sump pump after my cheap box store pump failed due to corrosion, I read a number of plumbing and builder web sites for recommendations, which were evenly split between Zoeller and Liberty. Also learned from them for my application in a 11" diameter cast-in sump, I needed a pump with vertical float. The downside of the Zoeller was premature switch failure, so I chose the Liberty 257 with 10' cord. Surprisingly, with the great deal from Pexuniverse, the Liberty wasn't any more expensive than a box store pump. The Liberty really surprised me with the quality of the build - fit and finish - the powder coat looks good and the unit is very solid with surprising heft. Installed in the sump with a 1.5" Schedule 40 PVC stack and checkvalve, it is much quieter than my old pump. And when it turns on, it blasts water out of the pipe and onto the lawn like a fire hose! The old pump had a wide-angle float and on a couple of occasions became caught between the pump housing and sump wall - so I had to manually trigger the pump when the sump flooded. I have no such worry with the Liberty with vertical float. It sits in the middle of the sump with good clearance all the way around. This is the kind of pump Tim the Tool Man Taylor would own.
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1 of 1 people found this review helpful.
Very quiet pump
By Tom S (from Perrysburg. Ohio) on 12/11/2011
Replaced my other sump pump because of noise through whole home. The new pump is quiet, you have to hold the pipe to know when it runs.
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Happy customer
By Jean (from Spring Valley, Ohio) on 9/6/2015
So far - GREAT! Very pleased with Pex Universe's communication and fast delivery. Pump is very quiet, and was easy to install. Hoping it outlasts the last brand we were using which has proven to have switch problems over time. Off to a great start! (Thank you!)
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Liberty 257 Automatic Submersible Sump Pump
By k D (from Wakefield Ma) on 10/4/2013
very good pump for the fits in a five gallon bucket and it's perfect for a small was shipped fast and it was the best price i could find on the internet.i try it after the easy instalation and it works fine. also very quiet compare the the old one. i do recomend this pump.
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Can't find one better
By Marvin F. (from Wellington, Florida) on 7/8/2012
I use the pump in my yard in a low spot to help remove rain waters on my 5 acre property in South Florida! I had my last liberty pump 7 years. Although it is not used alot, it would be interesting to know how many hours I actually used it. My last pump failed to start when the float engaged. Unfortunately, it would of cost more to repair! I have tryed other pumps over 18 years and I like this one the best and is why I bought another one!
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Liberty Pump
By pete (from New City NY) on 7/27/2011
Excellent pump
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liberty 257 sump pump
By kenray (from west orange,nj) on 7/20/2011
pump is ideal for narrow basins. easy installation. my sump basin is dry most of the time. pump only works during very heavy rains and then is dry. plumber installed liberty 257 in my sons house several years ago and it works fine.
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