Backwashable PP Pleated Cartridges are mainly designed for power plant condensed water filtration. PP Filter media of backwashable pleated cartridges are available in absolute ratings ranging from 1 to over 100 microns to meet the removal re of each individual condensate system. Like all the condensate filter cartridges from Hongtek, a variety of end fittings can be selected to retrofit the elements in existing power plant condensate filter systems.