Phosphate esters are polar fluids with excellent lubricating properties that can operate under extreme conditions such as electro-hydraulic compounds for steam and gas turbines, aircraft carriers, as well as steel mills and foundries. However, phosphate esters require strict control in order to extend their useful lifespan.

This article covers the requirements of the strict maintenance that is necessary to prevent the untimely destruction of phosphate ester fluids using equipment which Allen Filters, Inc. has designed for over half a century.