Nozzle for high-pressure cylinders

A nozzle for use with a cylinder that contains a high-pressure fluid, the nozzle comprising:

• a lower body adapted to be applied to a mouth of the cylinder;
• an intermediate component rotatably housed in a seat in said lower body, said intermediate component adapted to receive an accessory therein;
• and
• an upper ring nut element engageable with said lower body so as to stably hold said intermediate component in position such that the accessory is oriented with respect to the cylinder, wherein the seat is internal of said lower body, an upper section of a wall of said lower body having an internal thread, said upper ring nut having an external thread that engages the internal thread of said lower body so as to maintain said intermediate component in the position, wherein said lower body has a shank therebelow, the shank having an external thread adapted to engage with an internal thread of the mouth of the high-pressure cylinder, wherein said intermediate component has a widened base connected to an upper section, the upper section having a shoulder or step, the upper section having a diameter less than a diameter of the widened base, wherein a lower edge of said upper ring nut element abuts the step or shoulder.