Patent ID: 9631589
Date: 2017-04-25
CPC Classifications: B01D,F02M,Y10T

Claim:
1. A fuel filter monitor for use in a fuel stream having a flow direction comprising: (a) a ePTFE membrane, wherein said ePTFE membrane has a Bubble Point >50 PSI; (b) a support structure adjacent to said ePTFE membrane; (c) said ePTFE membrane disposed upstream of said support structure in said fuel stream; (d) wherein said monitor prevents penetration of water to the downstream of said fuel wet monitor, where the water can be in the form of discrete water drops in fuel, or a bulk water stream which displaces the upstream fuel; (e) wherein said monitor stops fluid flow when challenged with a bulk water stream; and (f) wherein said monitor contains no super absorbent polymer for water.