| 摘要 |
A water filter (2, 102, 202) comprises a closed shell (30, 130, 230) having an inlet (16, 116, 216) and an outlet (300). A filter media (56, 156, 256) is provided within the shell (30, 130, 230) and arranged such that water flowing from the inlet (16, 116, 216) to the outlet (300) passes through the filter media (56, 156, 256). The filter media (56, 156, 256) filters hydrocarbons from the water. A filter indicator (58, 158, 316) is arranged to filter hydrocarbons from the water and to restrict the flow of water through the water filter (2, 102, 202) in response to absorbing hydrocarbons, such that a reduction in the capacity of the water filter (2, 102, 202) to filter hydrocarbons from the water is indicated by a reduction in the flow of water through the water filter (2, 102, 202). |
