| 摘要 |
A rapid coupling valve, comprising an outer cylindrical body (1) provided with an end bottom (2) which is tightly screwed on the arrival pipe of the compressed gas, a set of threaded jaws (5) arranged in a crown-like disposition around the free end of said body, said jaws being intended for becoming tightened in a controlled way about the threading (not shown) of the inlet fitting of the cylinder to be filled, a first piston that is tight sealed against said filling fitting, and a safety piston (6) which can slide inside said body and locks said threaded jaws in the tightening position till the pressure of the arrival gas is above a value which is set forth previously. |
