Patent ID: 8418994

Claim:
An improved hot-cold water inlet pipe comprising: an inlet pipe, said inlet pipe including a metallic threaded external pipe, said metallic threaded external pipe including a locking ring with one or more slits, said ring having a smaller diameter than that of the external pipe; an internal pipe for engaging with an interior of the metallic threaded external pipe for strengthening said metallic threaded external pipe, said internal pipe being composed of a non-toxic plastic material with weather-resistant and pressure-resistant properties; a connecting section connecting the interior of the metallic threaded external pipe and enclosing the one or more slits as one unit; and a receiving chamber, being disposed at a distal end of the internal pipe, includes external threads thereon, said receiving chamber including a top opening and a bottom opening, said bottom opening having a diameter smaller than that of the internal pipe and connecting to the internal pipe, said top opening of the receiving chamber including one or more locking slits to cooperatively fit with a control valve, wherein said connection section completely encloses the receiving chamber.