High Flow AC Utility Rotary Vane Pumps. The 313V has an open flow rate of 20 GPM. This pump provides long life. Explosion-proof UL listed dual voltage 3/4 HP motor (115 and 230 VAC) Motor has sealed bearings, heavy-duty switch and thermal overload protection Built-in junction box Cast iron pump housing with iron rotor and carbon vanes Check valve, pressure relief valve and strainer assembly. Automatic bypass valve, 2" threaded bung for tank openings. 2 Year Warranty