A drain valve (20) for draining liquid from an enclosed space (14) comprises a movable plunger (42), which is movable between a closed position in which the plunger (42) does not allow liquid to flow through the drain valve (20), and at least one open position, in which the plunger (42) allows liquid to flow through the drain valve (20); and an elastic element (40; 54), which is configured to urge the movable plunger (42) into its closed position. The plunger (42) is provided with at least one duct (44) extending through the plunger (42) and allowing fluid to flow through the drain valve (20) when the plunger (42) is positioned in its closed position, wherein said at least one duct (44) is closed by a semi-permeable medium (48), which is permeable for air and water vapor and impermeable for liquid water.
DRAIN VALVE, EXTERIOR AIRCRAFT LIGHT UNIT AND POWER SUPPLY BOX
ABLAUFVENTIL, ÄUSSERE FLUGZEUGLICHTEINHEIT UND STROMVERSORGUNGSGEHÄUSE
SOUPAPE DE VIDANGE, UNITÉ D'ÉCLAIRAGE D'AÉRONEF EXTÉRIEURE ET BOÎTIER D'ALIMENTATION
2021-01-27
Patent
Electronic Resource
English
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