Item Detail Table of Content Fluid, Lube, and Fuel Handling Lubricant/Oil Dispensers & Pumps Air-Operated (2:1) Diaphragm Oil Pump Pkg, 55 gal Item Number: SMN454100 Price: $695.20* * log in for dealer pricing. Direct from 3rd Party Supplier Add To Cart Description Samson 454100 is a special 2:1 pressure ratio air operated pump with an outlet spigot for dispensing lubricants from 55 gallon drums. Includes Oil Tray with 2" BSP (M) bung adapter 2:1 Pressure ratio pump Suction Tube for 55 gallon drums Oil Spigot Valve Warranty Two (2) years Product Specification Weight18 lbs. Outlet Size3/4" BSP Operating Pressure140 PSI Max Flow Rate9.2 GPM Ratio 2:1