| 主权项 |
1. A fluid filter comprising:
a housing configured to allow entry of fluid to be filtered and to allow exit of filtered fluid; a filter cartridge disposed within the housing, the filter cartridge including a filter element disposed between two endplates, the filter element having a filter media configured to filter fluid that enters the housing from an unfiltered side of the filter media to a filtered side of the filter media, such that filtered fluid can exit the housing, the filter cartridge being replaceable; and a drain valve engaged with the housing, the drain valve includes a drain hole configured to allow fluid not filtered by the filter cartridge to exit the housing, the drain valve having an open position and a closed position that respectively allows or does not fluid flow through the drain hole, the drain valve is configured to rotate with respect to both the housing and the filter cartridge to open the drain valve into the open position and to close the drain valve into the closed position, the filter cartridge being removable from the housing when the drain valve is in the open position, and the filter cartridge is not removable from the housing when the drain valve is in the closed position, wherein the drain valve is sealingly engaged with the housing and indirectly connected with the filter cartridge when the drain valve is in the closed position. |
