Rotarex S.a.

Luxembourg Patent Company S.a.

Philippe Schmitz

Stephan Sellen

Paul Muzzo

Guillaume Massin

Privat Roderes

Thomas Andreas

Sellen Stephan

Georges Barthelemy

Daniel Becker

Etienne Kaichinger

Stephan Selen

A valve closing member for cooperating with a valve seat, comprising: a body a front circular face forming a central protrusion along a longitudinal axis of the body; a seal forming a ring fitted on the front circular face and around the central protrusion; and a retainer forming a ring surrounding the seal and attached to the body for retaining the seal on the body; wherein the seal shows a radially inner surface contacting a radially outer surface of the central protrusion, the radially inner surface and radially outer surface being both cylindrical, the radially outer surface showing at least one circular groove into which the seal is radially pressed by the retainer.

Closing member of a gas valve for very high pressure

A valve for compressed gas, comprising a body extending longitudinally, with a gas inlet at a lower end of the body, a gas outlet and a gas passage fluidly interconnecting the gas inlet and the gas outlet; a shut-off device housed in the body and configured for selectively shutting-off and opening the gas passage; a lever pivotally mounted on the body, at an upper end of the body, and configured for actuating the shut-off device; a hook pivotally mounted on the lever for engaging with a counter-shape on the body and thereby holding the lever in a folded position along the body; wherein the upper end of the body comprises a cylindrical wall delimiting an upper bore, the counter-shape being an upper edge of the cylindrical wall.

Lever valve with securing hook

A valve for a fluid, comprising: a body with an inlet, an outlet and a passage fluidly interconnecting the inlet and outlet; a shut-off device housed in the body and configured for selectively opening and closing the passage, the shut-off device comprising a main seat, a main closing element forming a channel extending there through and a pilot seat, a pilot closing element housed in the main closing element, a first compression spring, and a second compression spring; an actuating device of the shut-off device. The second compression spring is operatively mounted between the main closing element and the body and the first compression spring is stronger than the second compression spring.

Differential pressure opening and excess flow closing valve for gas cylinder

A valve comprising a body with an inlet, an outlet and a passage fluidly interconnecting the inlet and outlet; a shut-off device of the passage, with an actuating member movable along a longitudinal axis; a hand operating device of the actuating member, for selectively opening or closing the passage, and comprising a support element and a rotating element with at least one contact surface configured for sliding along at least one ramped surface on the support element, or vice versa, so as to convert rotation of the rotating element into a translation of the actuating member; wherein the body comprises two arms extending longitudinally and diametrically opposed relative to the longitudinal axis, with distal ends holding the support element.

Gas cylinder valve with radially extending operating handle

A regulator for compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage fluidly interconnecting the gas inlet and gas outlet; a pressure reducer with, in the gas passage, a shut-off device and a movable assembly operatively connected to the shut-off device and delimiting with the body a regulating chamber downstream of the shut-off device; a pressure relief device in the gas passage downstream of the regulating chamber; and a flow restriction in the gas passage upstream of the shut-off device, dimensioned for reducing the gas pressure at the gas outlet under a maximum pressure value when the pressure relief device is opened and the shut-off device is opened.

Pressure regulator with outlet overpressure security

A device for regulating the pressure of a compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage fluidly interconnecting the inlet and outlet; a mobile element carrying a shutter cooperating with a seat in the gas passage, the shutter and the seat forming a regulating valve; a hand-wheel operatively linked to a spindle rotatably mounted on the body; wherein the spindle is hollow and houses a spigot with a cam, the spigot being linked in rotation with the spindle and cooperating with a counter-cam spigot movable in translation but not in rotation relative to the body, and acting on the mobile element or on a shut-off valve for selectively shutting-off and opening the gas passage.

Gas pressure reducer with cam commanded shut-off valve

A capacitive level gauge for a container of a medium like compressed gas or liquid, comprising a body configured for being mounted on the container; two parallel lamellar electrodes extending from the body, for being inside the container and in contact with the medium; wherein the capacitive level gauge further comprises at least one spacer with two slots engaging with the two electrodes, respectively, maintaining a constant distance between the electrodes.

Capacitive gauge with lamellar electrodes held by spacer(s)

A device for regulating the pressure of a compressed gas, comprising a body with a gas inlet, a gas outlet and a gas passage; a mobile element biased by a main spring and carrying a shutter cooperating with a seat in the gas passage, the shutter and the seat forming a regulating valve, a shut-off valve with a shutter and a seat in the gas passage upstream of the regulating valve; an actuation assembly of the shut-off valve; wherein the shutter of the shut-off valve comprises a stem extending through the mobile element and the shutter of the element, for cooperating with the actuation assembly located in front of the element.

Gas pressure reducer with integrated shut-off valve

The invention is directed to a gas cylinder valve () comprising a body () with an inlet (), an outlet () and a passage () fluidly interconnecting said inlet and outlet; a shut-off device () with a seat () formed in the passage () and a shutter () movable along a longitudinal axis () for cooperating with said seat; a spindle () rotatably mounted on the body () along the longitudinal axis () and cooperating with the shutter () such as to move said shutter upon rotation of said spindle; a residual pressure device () fluidly downstream of the shut-off device (), with a seat () formed in the passage () and a piston () movable along a transversal axis (. At least one of the shutter () and the piston () shows a recess or opening () accommodating the other of said shutter and piston.

Compact gas cylinder valve with residual pressure function

A valve for pressurized gas or chemical agent. The valve comprises: a body with: an inlet, an outlet, and a passage which connects the inlet with the outlet and which includes a seat]. The valve further comprises a sliding piston able to engage with the seat in order to close the passage and a telescopic extension sliding against the passage in order to guide the piston in the passage at least between the open position and the closed position. The pressure difference between opposite faces of the piston pulls away the piston and the telescopic extension from the seat in order to open the passage, the passage remaining closed under pressure equilibrium. Additionally, a fire extinguishing system.

High pressure valve with telescopic piston

The invention is directed to a method for improving the fatigue behavior of the body () of a gas valve, the body comprising at least two bores () and at least one bore intersection () defining an internal volume; wherein the method comprises the following step: subjecting the internal volume to an autofrettage by applying a pressure of comprised between 100 MPa and 500 MPa by means of a liquid.. The invention is also directed to a gas valve body () comprising at least two bores () and at least one bore intersection () defining an internal volume with an internal wall; wherein the internal wall is treated by autofrettage resulting in compressive stresses at the intersection or at least one of the intersections.

Valve body treated by autofrettage

The invention is directed to a method for improving the mechanical behavior of a metallic body () comprising an internal volume for a fluid and at least one threaded connecting port () to said internal volume, the method comprising a step of treatment by autofrettage of the internal volume by applying a pressure to a liquid inside said volume. The autofrettage step comprises closing the internal volume by screwing a plug () to each the at least one threaded connecting port (), so that the thread(s) of said port(s) is/are also subject to the autofrettage treatment. The invention is also directed to a body () resulting from such a treatment, with compressive stresses at the root of one of the most carrying turns of the thread of each of the connecting ports. The compressive stresses improve the fatigue behavior of the body.

Metallic body with threaded port subject to autofrettage

The invention is directed to a gas valve comprising a valve body with a gas inlet, a gas outlet and a gas passage connecting the inlet with the outlet, gas shut-off device in the gas passage, with a seat on the valve body and a movable closure member, an electromagnetic actuator with an electric coil and a movable plunger configured for actuating the closure member of the gas shut-off device, a sleeve extending through the coil and slidably receiving the movable plunger and wherein the sleeve is made of austenitic stainless steel. This avoids embrittlement problems when using the valve with hydrogen under high pressure.

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Steinsel, Luxembourg

Philippe Schmitz