| 摘要 |
<p>The disclosure relates to a fuel filter/dehydrator element (10) having a coalescing layer (22, 26, 32) to coalesce into droplets water in fuel passing through and an absorptive layer (28, 34) downstream of the coalescing layer (22, 26, 32) to absorb water droplets but permit fuel flow, the absorptive layer (28, 34) decreases in permeability as it becomes saturated with water to cut down or cut off the fuel flow. In order to provide a substantially increased impedance to the flow of water droplets in preference to the flow of fuel a hydrophobic and oleophilic layer (24) is disposed between the coalescing (22, 26, 32) and absorptive (28, 34) layers. In addition a fuel permeable hydrophobic layer (29, 35) is disposed immediately downstream of the or each absorptive layer (28, 34) to support the latter is it becomes saturated with water.</p> |
