Patent ID: 8741137

Claim:
A filter module comprising: a housing including at least one sidewall and defining a housing volume and a single end opening; a cap sealingly secured to said filter housing over said single end opening, the cap including a first port for introducing a fluid to be filtered into said housing and a second port for allowing filtered fluid to exit said filter housing; a first filtering media being contained within the housing volume; and a filter element including: a porous containment layer; and a filtering core, the filtering core being formed by a second filtering media that is enclosed within the porous containment layer, the filter element being surrounded by the first filtering media and being contained within the housing volume so that the second filtering media is in fluid communication with the second port of the cap; wherein fluid entering said housing through said first port passes sequentially through said first filtering media, then through said porous containment layer, then through said second filtering media, with said first filtering media effectively removing at least a first impurity from a fluid received by the first port, and the second filtering media effectively removes at least a second, different impurity from the fluid.