Patent ID: 8960222
Filing Date: 2015-02-24
Classification: F16K,F17C,G05D,Y10T

Abstract:
1. A closure device for a container of compressed gas, the closure device comprising a shut-off valve and a pressure-reducing valve, and an external body housing the shut-off valve and the pressure-reducing valve, the external body being engageable with the container of compressed gas, wherein: (i) the external body comprises a first member including an inlet for the gas and being engageable with the container of compressed gas and a second member including an outlet for the gas and housing the shut-off valve, the closure device defining a passageway between the gas inlet and the gas outlet, (ii) the first member of the external body has a first internal chamber housing a fill valve including an inner body member, the first internal chamber communicating with the interior of the container when the closure device is in engagement therewith, (iii) the first member of the external body has a fill port communicating with the first internal chamber, and (iv) the inner body member defines part of said passageway and a seat for the pressure-reducing valve wherein the fill valve comprises a spring-loaded O-ring sealing member to seal the fill port from the interior of the container when the closure device is an engagement therewith, the O-ring sealing member being displaceable from its sealing position against the spring-loading by a gas pressure applied to the filling port.