| 摘要 |
A fluid channel (11,17) extending through the cylindrical support (2) for the coupling is linked to a valve (7) that automatically opens or closes a valve (51) in an adjacent coupling as it is opened or closed. A catch (26) prevents the valve in the coupling being opened if no adjacent coupling is connected. A holder (21) mounted in the support to engage or release the adjacent coupling is linked to the valve in a way that prevents the holder from releasing the adjacent coupling if the valve is opened. |
