| 摘要 |
A firesafe medical gas coupling (10) for use with flexible tubing supplying medical gas capable of combustion or of supporting combustion. The coupling comprises: an elongate body having an opening (20) in the region of each end, the openings being linked by a conduit (30); a valve assembly located within the elongate body, the valve assembly being movable between an open position, in which gas can pass between the openings along the conduit, and a closed position in which gas flow between the openings is prevented; a biasing assembly arranged within the elongate body to move the valve assembly into the closed position; and a heat activatable stop located in the region of each opening, operable to hold the valve assembly in the open position against the biasing assembly, and adapted to release the valve assembly to allow the biasing assembly to move the valve assembly to the closed position at an activation temperature. Aspects and embodiments provide an inline firebreak device which is substantially bidirectional and thus may be installed by untrained and unskilled people that are not practiced in the art. |
