A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such methods include elements made of Z-media....http://www.google.com.au/patents/US7338544?utm_source=gb-gplus-sharePatent US7338544 - Z-filter media with reverse-flow cleaning systems and methods
