Abstract: Pressure reducing valve for compressed gas, comprising a body (1) housing a gas circuit (11) comprising an inlet (3) and an outlet (5), the gas circuit (11) comprising a mechanism for reducing the pressure of the gas between the inlet (3) and outlet (5), the reduction mechanism comprising a reduction piston (7) movable in the body (1) and sealingly delimiting a reduction chamber (16) via a gasket (15), the reduction piston (7) being able to move in translation in an upstream/downstream direction and acted on by a first return member (10), the pressure reducing valve (100) comprising a safety valve for preventing a rise in the pressure in the reduction chamber (16) beyond a given threshold, the safety valve comprising a discharge orifice (6) for the gas, the discharge orifice (6) being selectively in communication with the reduction chamber (16) when the reduction piston (7) reaches a given limit downstream position under the effect of the pressure in the reduction chamber (16), characterised in that the gaske

Abstract: The invention relates to a device for selectively blocking a fluid passage, particularly for a tap-filling intake, including a structure defining a channel for the passage of a fluid extending between an inlet at an upstream end and an outlet at a downstream end, a valve seat, a valve selectively mobile in the channel between a first position for blocking the passage by sealingly bearing on the seat and a second position for opening the passage in which the valve is not sealingly bearing on the seat, wherein the blocking device includes a deformable seal, supported by the mobile valve and/or the seat, for bearing against the seat and ensuring the seal of the blocking when the valve is in the first position, characterized in that the mobile valve includes a main body and a stop mobile relative to the main body, the main body and the mobile abutment defining a mechanism for selectively pressurizing the seal and movable between a working position for pressuring the seal for increasing the force thereof on the se

Abstract: The invention relates to a device for selectively blocking a fluid passage, particularly for a tap-filling intake, including a structure defining a channel for the passage of a fluid extending between an inlet at an upstream end and an outlet at a downstream end, a valve seat, a valve selectively mobile in the channel between a first position for blocking the passage by sealingly bearing on the seat and a second position for opening the passage in which the valve is not sealingly bearing on the seat, wherein the blocking device includes a deformable seal, supported by the mobile valve and/or the seat, for bearing against the seat and ensuring the seal of the blocking when the valve is in the first position, characterised in that the mobile valve includes a main body and a stop mobile relative to the main body, the main body and the mobile abutment defining a mechanism for selectively pressurizing the seal and movable between a working position for pressuring the seal for increasing the force thereof on the se

Abstract: The invention relates to a tap (1) for a pressurized gas cylinder, that comprises a body (2) to be connected to a gas (G) outlet opening (3) of a gas cylinder (4), un gas (G) off-take circuit (C) including at least one gas outlet (5, 25), at least one valve (6) movable between a circuit (C) closing position and a circuit (C) opening position, at least one member (23) for adjusting the release flow of the gas (G), and a single actuation member (9) capable of interaction both with the valve (6) and with the flow adjustment member (23), characterized in that the actuation member (9) is mounted so as to be movable relative to the body (2) according to two distinct movements, said actuation member (9) being arranged relative to the valve (6) and the flow adjustment member (7) so that the two types of movements respectively control the movement of the valve (6) between the opening and closing positions on the one hand and the flow adjustment member (23) on the other hand.

Abstract: An integrated valve assembly and apparatus. The assembly has a main body that includes (1) an internal gas passage for conveying gas between a gas inlet and a gas outlet; (2) a gas expansion means placed in the internal gas passage between the gas inlet and the gas outlet; (3) and a locking valve that is used for controlling the release of the gas. Also included is a rotary actuator that can be operated by the user. This rotary actuator includes a blocking means that acts on the rotary actuator to prevent rotation of the rotary actuator. The integrated valve assembly may be used in a portable equipment unit that includes a compressed-oxygen bottle on which the valve assembly is mounted, and may optionally include a protective shroud for protecting the assembly and a demand valve connected to oxygen therapy nose clips, to a flowmeter or to any other similar device.

Abstract: Integrated valve assembly (2) with a main body comprising: an internal gas passage for conveying gas between a gas inlet and a gas outlet; gas expansion means (10, 12) placed in the said internal gas passage between the said gas inlet and the said gas outlet; and a locking valve (9) used for controlling the release of the gas and comprising a rotary actuator (18) that can be operated by the user; characterized in that it further includes blocking means (17) that act on the rotary actuator (18) of the locking valve (9) so as normally to prevent any rotation of the said actuator (18). Portable ambulatory equipment, comprising a compressed-oxygen bottle (1) on which such an integrated valve assembly (2) is mounted, optionally a protective shroud for protecting the assembly (2) and a demand valve connected to oxygen therapy nose clips, to a flowmeter or to any other similar device.

Abstract: A valve having a valve body (1) including an internal chamber (21) of axis (AA) having an upstream compartment (21a) of diameter (Dam) and a downstream compartment (21b) of diameter (Dav), with Dam<Dav. A fluid inlet orifice (10) is formed in the wall of the valve body (1) and opens into the upstream compartment (21a). A piston body (2) that can move in translation along the axis (AA) inside the internal chamber (21) and which is located between the fluid inlet orifice (10) and a fluid outlet orifice, has a front face (2a) located on the same side as the fluid inlet orifice (10), a rear face (2b) located on the same side as the fluid outlet orifice, and a lateral wall (2c) located between the front face (2a) and the rear face (2b). The lateral wall (2c) has a cylindrical first portion (P1) of diameter (D1) and a cylindrical second portion (P2) of second diameter (D2), with D1<D2 and D2<Dav.

Abstract: The invention relates to a valve comprising a valve body (1) comprising an internal chamber (21) of axis (AA) comprising an upstream compartment (21a) of diameter (Dam) and a downstream compartment (21b) of diameter (Dav), with Dam<Dav. A fluid inlet orifice (10) is formed in the wall of the said valve body (1) and opens into the upstream compartment (21a). A piston body (2) that can move in translation along the axis (AA) inside the said internal chamber (21) and which is located between the fluid inlet orifice (10) and a fluid outlet orifice, has a front face (2a) located on the same side as the fluid inlet orifice (10), a rear face (2b) located on the same side as the fluid outlet orifice, and a lateral wall (2c) located between the said front face (2a) and the said rear face (2b). The lateral wall (2c) has a cylindrical first portion (P1) of diameter (D1) and a cylindrical second portion (P2) of second diameter (D2), with D1<D2 and D2<Dav.

Abstract: The assembly includes a body in which there is formed a bore (3) for letting in gas under pressure, containing an isolation valve (4) exposed to the gas under pressure, at least one pressure reducer (5), an element (9) for selecting and regulating the flow rate through at least one outlet (8) for gas at reduced pressure, and a tubular member (11) for controlling the isolation valve sitting on top of the body. The isolation valve is a spool (4) which can be moved back and forth in a transverse housing (26) in the body and the opposite ends of which interact directly with curved guide ramps (18, 19) formed by the tubular control member. The direct control of the isolation spool (4) by turning the tubular member (11) simplifies the architecture of the assembly and reduces the manufacturing and servicing costs thereof. The assembly is useful in transporting bottles of gas, especially of medical oxygen.