| 摘要 |
A through flow coupler comprises two parts (10,11) having intercommunicating passages (7) therein so that fluid can flow through the two parts. A sealing member (26,27) provides a fluid tight seal between the two parts when the two parts are held together in a sealed condition. A pressure sensitive device, which may comprise a frangible ring (17), holds the two parts in the sealed condition when the fluid pressure within the passages is below a certain value and allows the two parts to move relative to one another to a pressure relief condition so that fluid can escape from the passages when the fluid pressure within the passages exceeds said certain value. Also, mutually co-operable members, e.g. flanges (19 and 23), are provided to prevent total separation of the two parts when the pressure sensitive device allows the two parts to move relative to one another. <IMAGE> |
