Patent ID: 7237570

Claim:
A gas cylinder dispensing valve for dispensing a gas from a compressed gas cylinder comprising: a body configured to couple with an open head portion of a gas cylinder and having an internal flow path communicating between a gas inlet and a gas outlet; a pressure regulator to regulate gas pressure of a flow of the gas within the internal flow path; an isolation valve positioned within the internal flow path, between the gas inlet and the pressure regulator and having a linear action between a closed position and an open position, a valve stem projecting from the body to actuate the isolation valve; a flow control valve positioned within the internal flow path, between the pressure regulator and the gas outlet, to control flow rate of the flow of the gas, the flow control valve having a rotating control shaft projecting from the body to adjust the flow control valve; a control knob to rotate the rotating control shaft; and an actuation element associated with the control knob so as to rotate therewith and impart motion to the isolation valve, wherein rotation of the control knob causes the isolation valve to move between the closed position and the open position and further rotation of the control knob adjusts the flow control valve and therefore controls the flow of the gas.