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1. Adapter suitable to connect a device for allowing compressed gas to pass through the adapter into an inflatable member, wherein the adapter comprises means for attaching the adapter to a source of compressed gas, said means for attaching the adapter having a gas passage, and where the means for attaching the adapter is in gas communication with a main housing, where the main housing has an inner first cavity comprising an open end, the first cavity suitable to receive a valve body of the inflatable member, a gas outlet disposed inside said first cavity, means for releasably holding the valve body of the inflatable member, and a resilient gasket is disposed between the main housing and the gas passage near the gas outlet, the gasket comprising a first end facing the open end of the first cavity and comprising an engagement surface configured to engage the valve body of the inflatable member when the valve body of the inflatable member is inserted into the first cavity, the gasket is engaged and abuts the valve body of the inflatable member; the gasket further comprising a lower section disposed opposite the engagement surface and comprising an inner lip and an outer lip, where said inner lip is in sealing and sliding engagement with the gas passage and the outer lip is in sealing and sliding engagement with the main housing, wherein the inner lip and outer lip, when engaged, form a substantially gas-tight third cavity, and where a housing shoulder is provided inside said first cavity, where the first cavity in a first cross-section perpendicular to the gas passage through the housing shoulder has a smaller cross-sectional area than in a second cross-section adjacent the housing shoulder such that the housing shoulder limits the movement of the gasket, and where the gas passage has a gas connection to the substantially gas tight third cavity provided between the lower section of the gasket and the main housing.
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