Valve device for pressurized gas cylinder

Valve device for a pressurized gas cylinder comprising:

• a connector adapted to be connected to a gas outlet orifice of a gas cylinder;
• a pressurised gas outlet;
• a controller for an output flow of gas released from the cylinder;
• a shaft for controlling closing of a gate valve or opening of the gate valve to release gas from the cylinder, the shaft being integral with a gate valve stem mounted in a body of the valve device by a seal arrangement, actuation of the shaft being arranged for controlling a mobile structure for opening and closing a cylinder gate valve through the gate valve stem, at least two orifices of different sizes extending through the part forming a first end of the gate valve stem, a third orifice extending in the valve body, the third orifice being connected to the gas outlet, the second part of the rotation of the shaft causing one of the two orifices and the third orifice to be opposite each other to determine the flow at which gas passes toward the outlet.

Valve device for a pressurised gas cylinder comprising:

• a connector adapted to be connected to a gas outlet orifice of a gas cylinder;
• a pressurised gas outlet;
• a shaft for controlling closing of a gate valve or opening of the gate valve to release gas from the cylinder;
• and
• a controller for setting an output flow of gas released from the cylinder, the shaft being integral with a gate valve stem mounted in a body of the valve device by a seal arrangement, actuation of the shaft being arranged for controlling a mobile structure for opening and closing a cylinder gate valve to release gas from the cylinder through the gate valve stem,
• the first end of the gate valve stem being fixed to the shaft, and the second end of the gate valve stem being integral in rotation with the first end integral with the shaft and free in translation relative to the first end, the second end of the gate valve stem being screwed in the valve body, rotation of the shaft being arranged for controlling helical movement of the second end of the gate valve stem in the body of the valve, the mobile structure having freedom of translation between an extreme position of closing off the gas supply, and for opening the gas supply, an extreme position of stopping or an intermediate position being determined by the position of the second end of the gate valve stem.