Buy factory-direct and save! Sump Pumps Direct is your online SP50V Little Giant SP50V - 1/2 HP Thermoplastic Submersible Sump Pump w/ Vertical Float Switch superstore. We carry a wide selection of battery backup sump pumps, combination sump pumps, primary sump pumps, submersible sump pumps, basement sump pumps and sump pump accessories from Basement Watchdog, Peak Flow, Red Lion, StormPro, Wayne and Zoeller.