| CPC B01D 35/153 (2013.01) [B01D 29/15 (2013.01); B01D 35/306 (2013.01); B01D 46/0004 (2013.01); B01D 46/0089 (2013.01); B01D 46/2411 (2013.01); F02M 37/34 (2019.01); F02M 37/42 (2019.01); B01D 2201/162 (2013.01); B01D 2201/291 (2013.01); B01D 2201/316 (2013.01); B01D 2201/34 (2013.01); B01D 2201/4053 (2013.01); B01D 2201/4061 (2013.01); B01D 2265/026 (2013.01); B01D 2265/028 (2013.01); B01D 2271/02 (2013.01)] | 21 Claims |
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1. A filter cartridge structured to engage a filter head assembly, the filter cartridge having a first filter end and a second filter end, the filter cartridge comprising:
a first endplate comprising:
an annular endplate wall, and
an annular endplate surface that defines a central endplate opening, the annular endplate wall and the annular endplate surface defining an endplate cavity, the central endplate opening having a first diameter;
filter media defining an internal cavity, the filter media disposed against the first endplate; and
a keyed element disposed on the first filter end and within the endplate cavity, the keyed element structured for engagement of a latch element on the filter head assembly, the latch element configured to lock a valve element in a closed position when not engaged by the keyed element, the keyed element comprising:
an annular base portion on a first end of the keyed element, the annular base portion extending along the annular endplate surface,
an annular wall extending axially along the annular endplate wall and from the annular base portion toward a second end of the keyed element, and
an annular edge formed around an internal surface of the annular wall, extending along a plane, and protruding inward, the annular edge configured to engage the latch element and unlock the valve element, the annular edge having a second diameter that is greater than the first diameter;
wherein the annular endplate wall extends into the internal cavity and the annular endplate surface is disposed within the internal cavity;
wherein the valve element defines an open position and the closed position;
wherein in the open position, fluid flow travels from the internal cavity through an outlet slot;
wherein in the closed position, fluid flow is prevented through the outlet slot; and
wherein unlocking the valve element causes the valve element to be in the open position.
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