National Spencer Economy Rotary Pump for 15-55 Gallon Container 960 Economy Rotary Pump - fits 15 through 55-gallon drums with 2" NTP bung opening. Dispenses gasoline, diesel fuel, ATF, Light oils, and hydraulic oil. Heavy-duty cast iron body with 3 piece steel suction tube 3/4 inch threaded discharge spout (M). Hose assemblies 2158 and 2178 available at extra cost. Dispenses approximately 7-1/2 gallons per 100 revolutions.