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The Liberty HT450-series pumps are made of aluminum for operation in high temperature submersible sump operations such as condensate pits and high temperature water transfer. The Liberty Pump HT450 series pumps operate at 1/2 HP, 1 phase power and can handle solids up to 3/8". Each pump has a 1-1/2" FNPT discharge. Features: Vortex style impeller permits passage of solids without clogging Made of high temp engineered thermoplastic Fiberglass reinforced nylon and powder coated aluminum construction Stainless steel rotor shaft All fasteners made of non-corrosive stainless steel The HT450 pumps are manually operated and need a corresponding control panel (sold separately). The HT453 pumps are automatic with float switches. LIBERTY HT450-Series High Temp Sump Pumps Model Comparison Chart Model Discharge HP Voltage Phase Max. GPM (77° F) Max. Head (77° F) Max Temp. Solids Operation Cord HT450 1-1/2" FNPT 1/2 115 1 53 34' 180° F 3/8" Manual 10' HT450-2 1-1/2" FNPT 1/2 115 1 53 34' 180° F 3/8" Manual 25' HT453 1-1/2" FNPT 1/2 115 1 53 34' 180° F 3/8" Auto Wide-Angle Float w/Series Plug 10' HT453-2 1-1/2" FNPT 1/2 115 1 53 34' 180° F 3/8" Auto Wide-Angle Float w/Series Plug 25' PERFORMANCE RATINGS DIMENSIONAL DATA TECHNICAL DATA ELECTRICAL DATA BROCHURE Liberty HT450-Series Brochure MANUAL Liberty HT450-Series Installation Manual SPECIFICATIONS Liberty HT450-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.