This disclosure describes examples of a filter media for use in filter devices, e. A pressure opposite to the internal pressure is applied to the blank wall from the outside in at least one area which is exposed to the radial dilation. A bottom screen of coarse 20 mesh material is used for strength to support the other screens. The fluid filter cartridge includes a closed endcap with a blocking pin such that when the fluid filter cartridge is installed, the blocking pin is positioned to prevent the valve ball from closing off the flow opening.