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The Liberty 450-series submersible sump pumps are built for residential and light commercial applications. These premium pumps combine top-shelf performance with compact design, allowing a pump to be inserted in a wide variety of systems and configurations. Features: Vortex style impeller permits passage of solids without clogging. Made of high temp engineered thermoplastic Polypropylene and powder coated aluminum construction Stainless steel rotor shaft All fasteners are non-corrosive stainless steel Oil-filled, hermetically sealed motors with thermal overload protection Permanently lubricated upper and lower bearings 1-1/2" Discharge Removable base allows suction down to 1/8" The pumps within the 450-series mainly vary in operation and/or float switch type, see chart below. LIBERTY 450-Series Sump Pumps Model Comparison Chart Model Discharge HP Voltage Phase GPM Max. Head Operation Float 450 1-1/2" 1/2 115 1 52 34' Manual N/A 451 1-1/2" 1/2 115 1 52 34' Automatic Quick-disconnect Wide Angle 453 1-1/2" 1/2 115 1 52 34' Automatic Wide Angle w/Series Plug 457 1-1/2" 1/2 115 1 52 34' Automatic Magnetic Vertical PERFORMANCE RATINGS DIMENSIONAL DATA TECHNICAL DATA ELECTRICAL DATA BROCHURE Liberty 450-Series Brochure MANUAL Liberty 450-Series Installation Manual SPECIFICATIONS Liberty 450-Series Curves Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.