Description Features: Max flow: 7 gpm Max pressure: 150 psi Max speed: 2600 rpm Port sizes: 3/4" NPT Pump shaft rotation: CW 5/8" solid stainless steel shaft ( 1/2" Hollow Shaft also available) 4101N is Ni-Resist 4-roller pump Hypro roller pumps are designed for agricultural and industrial spraying and transfer of a variety of fluids. These include insecticides, herbicides, emulsives, aromatic solvents, liquid fertilizers and many other liquids. The economical rotary-action roller principle requires no check valves while providing positive displacement characteristics with less friction and lower starting torque than other pumps. Instruction Manual Instruction Manual Part Breakdown Roller Material Comparison Roller Pump Material Comparison