Abstract: The invention relates to a device for regulating a pressurised gas, said device including: a stopper (4) engaging with a seat (5) and capable of closing a pressurised gas passage; a so-called low-pressure chamber (29) downstream from the seat (5), the low-pressure chamber including a plate (27) to which the stopper (4) is coupled, and the plate being subjected to the force of a spring (30) housed in said chamber (29) and arranged concentrically relative to the seat (5) and the fastening means (28) thereof. The chamber (29) is defined by a diaphragm (26) in free contact with the plate (27). The opposite surface of the diaphragm (26) is subjected to the force of a spring (20) having a prestress which is adjustable via control means (13, 14). The control means are indexed according to two positions: a first prestress release position for ensuring the closure of the device at the stopper (4), and a second calibrated prestress position of the diaphragm (26) corresponding to the regulator operational position.

Abstract: A valve for pressurized or liquefied gas comprises a valve body (12) with a gas flow channel (16) and in this channel a sealing seat (30) for an open/close element (32) having a free end (60) where a shoulder (62) is provided. An annular seal (64) is mounted on the free end (60) of the open/close element (32), the annular seal (64) having a front end face (66) facing the sealing seat (30) and a rear end face (68) resting on the shoulder (62) of the open/close body. A holding ring (70) surrounds the annular seal (64) circumferentially and comprises a radial lip (72) that bears on the outer edge of the front end face (66) of said annular seal (64). The annular seal (64) includes an outer annular shoulder (74) on the edge of its front end face and the radial lip (72) with the holding ring (70) has an annular bead (76) facing this outer annular shoulder (74) of the annular seal (64).

Abstract: Valve for pressurized or liquefied gas cylinder comprising a valve body (12) with a gas flow passage (16) running between an inlet opening (18) and an outlet opening (20); and a sealing seat (30) inside the passage (16) of the valve body with which a plugging member (34) is associated. A control head (14, 114) is mounted removably on the valve body (12) and includes an axial control rod (60, 118) cooperating with the plugging member (34) in order to move it between a closed position in which it rests on the sealing seat (30), in order to block the flow into the passage (16), and an open position in which the plugging member (34) is separated from the sealing seat (30), in order to enable the outflow. A locking means (82) is integrated with the valve body (12) and enables the plugging member (34) to be locked onto the sealing seat (30) when the control head (14, 114) is separated from the valve body (12).

Abstract: A sealed flange joint for high pressure and/or high purity fluid channels comprises includes a first flange with a first fluid channel and a cylindrical front cavity. The front cavity is axially delimited by a ground surface and radially by a peripheral surface. The first fluid channel passes axially through the first flange to open into the ground surface. A polymer seal ring has a radial outer surface and a radial inner surface, and is fitted into the cylindrical front cavity so that its radial outer surface engages the peripheral surface of the front cavity. A second flange is removably fixed onto the first flange, and has a second fluid channel in axial continuation of the first fluid channel. The second flange has an axially protruding cylindrical front nipple with a conical head, the second fluid channel axially opening into an end surface of the conical head.

Abstract: The invention relates to a tap for a gas or liquefied gas vessel having on a conical threaded base of the tap body a clamping ring adapted to be firmly tightened against a neck of the vessel to maintain a tight engagement of the threads of the base and the neck of the vessel in case of application of a strong impact force to the tap exteriorly of the vessel.

Abstract: The invention relates to a tap for a gas or liquefied gas vessel having on a conical threaded base of the tap body a clamping ring adapted to be firmly tightened against a neck of the vessel to maintain a tight engagement of the threads of the base and the neck of the vessel in case of application of a strong impact force to the tap exteriorly of the vessel.