The 257 from Liberty Pumps is an Automatic Sump/Effluent Pump w/ Vertical Float Switch, 1/3HP, 115V, 10' 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.

Features:

• 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;

Warranty:

• 3 years manufacturer's warranty