| 摘要 |
An improved coupling is utilized to interconnect conduits which conduct a flammable fluid, such as LP gas. The coupling includes a plug assembly which is telescopically received in a socket assembly. The socket assembly has retaining elements or balls which engage an annular collar which extends around a body of the plug assembly. In the event of a fire or other condition causing heating of the coupling to a temperature above a predetermined temperature, the plug body is released from the collar and is ejected from the socket assembly to disconnect the coupling. Simultaneously with ejection of the plug body from the socket assembly, a valve in the socket assembly is closed to block a flow of flammable gas through the socket assembly. A single spring is utilized to perform the dual functions of ejecting the plug body from the socket assembly and closing the socket valve. In order to provide for releasing of the plug body from the collar when the coupling is heated to the predetermined temperature, the plug body and collar are interconnected by a body of material which fuses when the predetermined temperature is reached.
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