Patent ID: 7163620

Claim:
A filtration system for a floodable compartment having an interior wall between a water inlet and a water outlet, the filtration system comprising: a filter adapted to be positioned at or near the water outlet to block filtered particles in water entering the floodable compartment via the water inlet from reaching the water outlet, the filtered particles comprising captured particles and uncaptured particles; a strainer that surrounds the filter and comprising a first end to contact the filter and a second end to contact the interior wall of the floodable compartment to allow the water entering the floodable compartment from the water inlet to pass between the filter and the strainer before interacting with the filter, the strainer adapted to capture at least some of the uncaptured particles when the filter is removed from the water outlet; and wherein the filter and the strainer are configured to allow all of water passing through the filter to also pass through the strainer.