Fuel tank valve assembly

An assembly, comprising:

• a closure member having an upstream-facing surface and a downstream-facing surface, wherein a fluid discharge passage extends through the closure member between the upstream-facing surface and the downstream-facing surface, wherein the upstream-facing surface of the closure member defines a first valve seat;
• a housing defining a fluid inlet, a fluid outlet and a chamber, wherein the fluid inlet is in fluid communication with the fluid outlet by way of the chamber, wherein an interior surface of the housing that defines the chamber includes a shoulder surface that defines a second valve seat, wherein the closure member is removably-attached to a portion of the housing that defines the fluid outlet;
• a biased-closed valve member movably-disposed within the chamber, wherein the biased-closed valve member includes a first portion and a second portion, wherein the first portion of the biased-closed valve member defines a water passageway;
• and
• a membrane that is permeable to water but impermeable to fuel is disposed within the water passageway,
• wherein selective attachment of the closure member to the housing configures the biased-closed valve member in a first orientation defined by:
• the first portion of the biased-closed valve member engaged with the first valve seat whereby the fluid discharge passage, the water passageway and chamber permit fluid communication between the fluid inlet and the fluid outlet, and
• wherein selective detachment of the closure member from the housing configures the biased-closed valve member in a second orientation defined by:
• the second portion of the biased-closed valve member engaged with the second valve seat thereby denying fluid communication between the fluid inlet and the fluid outlet.