Parker-Hannifin Corporation
Filter element with torsion lock and/or sliding piston, assembly and methods

Abstract:

A filtration assembly is provided that comprises a filter cartridge and a filter head, that has particular application for liquid filtration, such as engine fuel filtration in an embodiment. The filter cartridge can include a thread and a torsion lock detent to provide twist and lock mounting to the filter head. Separately, the filter cartridge can include a slidable piston that can become pressurized by application of liquid pressure during operation that can apply an axial force to the filter head to load the thread and increase threaded attachment rigidity and/or the natural frequency of the filter cartridge to a more desirable level, and thereby limit vibrational impacts.