Patent ID: 6929246

Claim:
A fluid expansion valve comprising: a) a main body within which there is formed at least one internal passage for fluid, said internal passage having at least one inlet port for fluid whose pressure is to be reduced, and at least one outlet port for reduced-pressure fluid, b) fluid pressure-reducing means arranged in or on at least part of said internal fluid passage, between said inlet port and said outlet port, and designed to reduce the pressure of the fluid, and c) an outlet coupling having at least one inlet end and at least one outlet end, with said outlet end comprising an external profile designed to take and have connected to it a user connector which has an internal profile tailored to and optionally, complementing said external profile of said outlet coupling outlet end, d) wherein said outlet coupling outlet end comprises at least three cylindrical coupling portions arranged in succession from said outlet end of said outlet coupling towards said inlet end through which said outlet coupling is coupled to said main body, said first coupling portion having an first outside diameter, said second coupling portion having a second outside diameter, and said third coupling portion having a third outside diameter, which diameters are such that said first outside diameter is smaller than said second outside diameter, and said second outside diameter is smaller than said third outside diameter, and said first outside diameter is between about 6 mm and about 10 mm, said second outside diameter is between about 7 mm and about 18 mm, and said third outside diameter is between about 11 mm and about 19 mm.