The Trans-O-Filter unit recirculates at flow rates of 3 to 10 gallons per minute on fuel or hydraulic systems. This enables the unit to collect entrained moisture on a coalescing element until water droplets form large enough to drop to the sump for removal from a draw-off drain valve.
To enhance the life of the coalescing element, a prefilter can be added to remove particulates. Choice of media allows the user to select high-dirt-holding capacity depth cartridges or absolute media of pleated membrane to trap 1 micron particles.