Filtration systems are designed to remove suspended particles, certain types of bacteria and unwanted dissolved substances. Membrane and ultra-membrane filters remove particles and some dissolved solids. Ion-exchange filters use resins to filter out unwanted ions, while other systems remove dissolved solids through a precipitation process. In each of these filtration processes, back pressure is created as large capacity pumps convey water through filters. For pump protection, as well as protection of the integrity of the overall system, rupture disks from ZOOK can provide relief from an over-pressure condition.