Abstract: The invention is directed to a device (2) for regulating the pressure and/or flow of pressurized gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (10, 26) connecting the outlet (8) with the inlet (6), a gas shut-off device comprising a seat (22) in the passage (10) and a movable closure element (24) cooperating with said seat (22) and a piston (12) carrying the closure element (24) and delimiting with the body (4) a low pressure chamber (28) downstream of the shut-off device (22, 24). The body (4) comprises a first portion (41) with the seat (22) and the inlet (6) and a second portion (42) housing the piston (12) and delimiting the low pressure chamber (28). The second portion (42) is movable relative to the first portion (41) between a closed position, and an open position.

Abstract: The invention is directed to a device (2) for regulating the pressure and/or flow of pressurized gas, comprising a body (4) with a gas inlet (6), a gas outlet (8) and a gas passage (10, 26) connecting the outlet (8) with the inlet (6), a gas shut-off device comprising a seat (22) in the passage (10) and a movable closure element (24) cooperating with said seat (22) and a piston (12) carrying the closure element (24) and delimiting with the body (4) a low pressure chamber (28) downstream of the shut-off device (22, 24). The body (4) comprises a first portion (41) with the seat (22) and the inlet (6) and a second portion (42) housing the piston (12) and delimiting the low pressure chamber (28). The second portion (42) is movable relative to the first portion (41) between a closed position, and an open position.

Abstract: The invention relates to an on-off valve with a pressure reducer intended to be connected to a gas cylinder. The objective of the invention is to ensure that the device is closed and put into service by way of simple and reliable means at high pressures. A shutter is controlled by a mobile part of the valve with pressure reducer, forming a low-pressure chamber of the device. The shutter is subjected to an elastic force in the closing direction. A working spring of the valve with pressure reducer acts on the mobile part in the opening direction. A rotary control member working over at least one turn makes it possible to compress the working spring into the position in which the valve with pressure reducer is put into service. In the closed position, a plate of pusher of the control member is remote from the working spring.

Abstract: A tap for a pressurized gas cylinder that includes a body with a gas inlet, a gas outlet, a gas passage connecting the inlet to the outlet, a device for maintaining residual pressure arranged on the gas passage, and a shut-off valve for closing the gas passage, downstream from the device for maintaining residual pressure. A wheel for controlling the tap acts on the shut-off valve and on the device for maintaining residual pressure via control rods. The wheel comprises sliding tracks for the control rods and a first position for filling the cylinder wherein the device for maintaining residual pressure is deactivated and the shut-off valve is open, a second position for closing the cylinder wherein the device for maintaining residual pressure is activated and the shut-off valve is closed, and a third position wherein the device for maintaining residual pressure is activated and the shut-off valve is open.

Abstract: The invention relates to an on-off valve with a pressure reducer intended to be connected to a gas cylinder. The objective of the invention is to ensure that the device is closed and put into service by way of simple and reliable means at high pressures. A shutter is controlled by a mobile part of the valve with pressure reducer, forming a low-pressure chamber of the device. The shutter is subjected to an elastic force in the closing direction. A working spring of the valve with pressure reducer acts on the mobile part in the opening direction. A rotary control member working over at least one turn makes it possible to compress the working spring into the position in which the valve with pressure reducer is put into service. In the closed position, a plate of pusher of the control member is remote from the working spring.

Abstract: The invention relates to a valve for a gas cylinder pressure. It includes a body with a gas inlet, a gas outlet and a gas passage connecting the net to the outlet. The valve comprises a residual pressure holding disposed at the gas passage. It also comprises a valve for closing the gas passage downstream of the residual pressure holding. A flywheel control valve acts on the valve and on the holding device via a residual pressure control rod and, respectively. The steering wheel includes sliding tracks for the control rods. It comprises a first position of the bottle filling device where the residual pressure holding is turned off and the valve is open, a second dosed position of the bottle where the holding device is active residual pressure valve and is closed, and a third operative position where the holding device is active residual pressure and the valve is opened.