This specialty filtration system is designed for custom applications. The flow meter filtration unit will turn off at a preset gallon rating, set by the installer. This feature ensures that the filters are changed at the specified gallon rating. While the filtration system with flow meter featured below comes with these standard features, we can substitute any type of filter needed from DI to nitrate removal. We carry and will customize any of our units to meet your needs. NSF listed filter cartridges available. TQM procedures followed to ensure top quality.