A wide range of fluid compatibility, for reliable operation with low-lubricity, low viscosity fluids. The PF4000 Series pumps are a Bi-directional rotation providing constant flow direction regardless of drive shaft rotation. The pumps comes with multiple Seal Options: Standard Nitrile, Optional Fluorocarbon, or Optional EPR seals for use with some phosphate ester fluids. Split-Flow® models can supply multiple, independent flows from one pump! Multiple flows are achieved by combining the output of individual pistons in various combinations (up to one outlet per piston). This pump has 10 pistons.