Patent ID: 8167484

Claim:
A temperature indication pipe joint, comprising: a shell, wherein a water conduit is arranged in said shell, the said pipe joint further including a heat transmission unit which has a first end in said water conduit and a second end connected to the center of a spiral double sheet metal, said spiral double sheet metal further has an indicating needle extended from its other end; said shell has a mandrel inside, the mandrel is cylinder having an open end and a closed end, said open end by which the water is admitted into said water conduit, a water outlet of said water conduit is arranged on a sidewall of said mandrel , said closed end has a cover, wherein an embedded plate is embedded in the center of said cover, a screw is fastened inside said embedded plate, said goes through said closed end of mandrel while the cap of said screw remained inside said water conduit, the screw and embedded plate constitute said heat transmission unit while said embedded plate has an external end connected to said double sheet metal.