A valve arrangement includes a housing with an outlet and an inlet and having a poppet. The poppet has a stem and is movable within the housing along a movement axis between an open position and a closed position. The inlet is isolated from the outlet when the poppet is in the closed position. The inlet is in fluid communication with the outlet when the poppet is in the open position. The stem is inverted relative to the housing such that at least a portion of the poppet stem is disposed in the inlet when the poppet is in the open position.

A multiple event trigger and actuation system including an actuator having an actuation component, a frangible dome and a pressure shiftable sleeve, a trigger having an incrementally movable stem, a holding configuration operably connected to the stem and configured to allow an incremental movement at a time based upon a pressure cycle and then hold the stem in such incremented position, and a rupture disk, the disk being positioned between a port to a pressure source and a trigger chamber, and a trigger transfer sleeve operatively connected to the shiftable sleeve to cause movement of the shiftable sleeve upon movement of the trigger transfer sleeve.

An improved burst disc assembly for use in pressure relief conduits for high vacuum and ultra-high vacuum containment vessels, the assembly having a body with inlet and outlet openings connected by an internal passage, a burst disc disposed within the internal passage and connected therein to hermetically isolate the inlet and outlet openings. The assembly further has a mounting structure connected to the body and outwardly extending therefrom that may be clamped between adjacent faces of a pair of metal seal flanges provided in the relief conduit to secure the assembly in position and hermetically seal the assembly in the conduit in a manner prohibit the passage of gas molecules from the surrounding environment into the containment vessel through the relief conduit. The mounting structure is formed from a soft metal material having substantially lower hardness value than that of the metal seal flange faces to enable adequate sealing. The connection between the mounting structure and the body further provides similar hermetic seal. Upon rupture of the burst disc, the assembly alone must be replaced while the metal seal flanges connecting the burst disc assembly to the containment vessel may be reused.

Disclosed herein is an example method for expelling a fire suppressant from a container into a distribution manifold. The method includes generating a propellant gas that flows into the container via a first port of the container, thereby causing a pressure within the container to increase. The container includes the fire suppressant prior to the generation of the propellant gas. The method further includes, in response to the pressure within the container exceeding a threshold pressure, expelling the fire suppressant from a second port of the container into the distribution manifold. The generated propellant gas continues to flow into the container via the first port at least until substantially all of the fire suppressant included within the container prior to the generation of the propellant gas is expelled from the container via the second port. Example fire suppression systems are also disclosed herein.

An arrangement for blocking/unblocking a fluid flow comprises: a component delimiting a fluid passage to conduct a fluid from a high pressure side to a low pressure side; a bursting disk at least indirectly attached to the component and separating the high and low pressure sides to close the fluid passage; a support element on the low pressure side, which supports the bursting disk to withstand a fluid pressure on the high pressure side that exceeds a nominal bursting pressure of the bursting disk but that is lower than a maximum pressure; and a controllable actuator actuatable for unblocking the fluid passage. To unblock the fluid passage, the actuator is arranged to destroy or damage the support element such that a fluid pressure on the high pressure side of the bursting disk exceeding the nominal bursting pressure causes the bursting disk to burst.

A device for controlling the release of gas from a pressurized container includes a plug comprising a passage therethrough and a diaphragm within the passage. The diaphragm is configured to initially prevent flow of gas through said passage, and is rupturable or displaceable to allow gas to flow through said passage once said diaphragm is ruptured or displaced. The device further comprises a screw located within the plug and comprising a lance configured to move towards said diaphragm upon rotation of the screw. The lance is configured to rupture or displace the diaphragm so as to allow flow of gas through the passage and out of the plug, once the screw is rotated a predetermined amount.

A control regulator includes a diaphragm assembly with an integrated pressure relief mechanism. The diaphragm assembly includes a diaphragm with a locally weakened area and a diaphragm plate with an opening aligned with the locally weakened area.

Safety valves accurately control closure and opening of fluid passage through the valve. Valves include a barrier that blocks the fluid until removal only by a high-energy projectile. Following removal and opening, the barrier or the projectile can flow through the valve, which remains open. Bullets, pneumatic pistons, shot, coilgun pellets and any other forceful projectile may impact and remove the barrier. The projectile is actuated with any type of chemical reaction, firing pin, spring release, accelerating circuit, ignition circuit. Catchers in the valve envelop or otherwise retain the projectile or barrier pieces and enter the fluid flow of the opened valve without blocking it. Disruptable barriers include strong but breakable glass plates, thin steel sheets, a rotatable door and other barriers that can withstand potentially over 10,000 psi of fluid pressure while closing the valve. Valves can use circuits to both monitor valve open/closed status and initiate firing the projectile.

A degassing unit for an electronics housing includes a base body fluid-tightly connectable to an edge of a pressure compensation opening of the electronics housing, the base body comprising a gas passage opening, a membrane covering the gas passage opening and being fluid-tightly connected to the base body in a region surrounding the gas passage opening, an emergency degassing mandrel comprising a tip pointing towards the membrane, a contact element being resiliently displaceable and disposed between the tip of the emergency degassing mandrel and the membrane in a non-operating state, a covering hood disposed on an exterior side of the base body, and a spring element for a resilient bearing of the contact element, the spring element being interposed between the covering hood and the contact element.

A frangible valve is disclosed. The frangible valve can include an outer portion operable to form a pressure boundary for a pressure vessel. The frangible valve can also include an inner portion integrally formed with the outer portion and having a central region and a separation region about a perimeter of the central region proximate the outer portion. The separation region can have a thickness less than a thickness of the central region and can be configured to break at a predetermined fluid pressure inside the pressure vessel to vent pressure from the pressure vessel.