A valve assembly includes a valve housing defining therein a fluid flow channel between a first end arranged to be connected to a source of pressurised fluid, and an outlet a frangible member disposed within and across the fluid flow channel, rupture means for rupturing the frangible member and biasing means for biasing the means for rupturing into contact with the frangible member to cause rupture thereof. The assembly also includes retaining means for retaining the rupture means out of contact with the frangible member to prevent rupture thereof and release means configured to release the retaining means to allow the biasing means to bias the rupture means into contact with the frangible member. The retaining means includes a bearing extending to engage the biasing means and hold it in a compressed state and the assembly includes also includes securing means for securing the bearing in the engaged state.

A method of creating a burst groove in a burst member is provided. The burst groove following a path, wherein: the groove is created in a plurality of laser scoring stages which are performed in succession to thereby successively increase the depth of the burst groove during each stage; each laser scoring stage involving laser scoring the burst member along at least a portion of the path. The laser scoring in each stage involves laser-energizing a respective region of the burst member with a respective energization width measured perpendicular to the path. In at least one stage the energization width is smaller than the energization width in the immediately preceding stage.

A flow control tool having a body, a sliding sleeve, at least one activation member, a flapper insert, and a retaining member. The body has a first body end, a second body end, and a flowbore. The sliding sleeve is disposed or otherwise positioned within the flowbore. The sliding sleeve is (initially, such as during assembly or prior to running) releasably connected with the body. The sliding sleeve may be movable to a locked position. During production or flowback, the flow control tool is maintained open and in situ.

Specified is a water supply apparatus, a mixing apparatus (1) being provided for mixing, in a mixing container (3), water conveyed in the mixing apparatus (1). Arranged relative to the mixing container (3) is a base apparatus (2) which has a base chamber (9) that is hydraulically connected to a water pipe (11, 12, 13) of the water supply apparatus and has an opening to the surroundings. A sealing device (10) is installed in the base chamber (9) for the purpose of closing off the opening of the base chamber (9) from the surroundings. The sealing device (10) has a weak point wall region (17) whose pressure strength is lower than the pressure strength of wall regions of all the other components of the water supply apparatus which, in the operating state, enclose cavities that can be filled with water, and which separate these cavities that can be filled with water from the surroundings.

A valve includes a valve body having an inlet for fluid communication with a space or source containing pressurised gas, and at least one outlet. A membrane is arranged between the inlet and the at least one outlet. A membrane puncturing element is arranged for movement between a retracted, inoperative position and an extended position in which it punctures the membrane. An actuating piston is operatively coupled to the membrane puncturing element for moving the membrane puncturing element between its retracted and its extended positions, the actuating piston being received in a piston bore of the valve body. The valve body also includes a cartridge receiving chamber for receiving a sealed actuating gas cartridge. A cartridge puncturing device is provided for puncturing the actuating gas cartridge. An actuating gas flow passage communicates actuating gas released from the actuating gas cartridge to the actuating piston bore upon puncturing the actuating gas.

A valve member for an inlet or outlet valve assembly of a reciprocating pump assembly includes a valve body and a seal member. The valve body comprises a first body surface and a second body surface that extend circumferentially about the valve body. The valve body defines a body axis and an annular cavity. The seal member is positioned at least partially within the annular cavity of the valve body such that an outer seal portion of the seal member extends between the first body surface and the second body surface of the valve body. The outer seal portion of the seal member comprises a first seal surface and a second seal surface. The first body surface, the first seal surface, and the second seal surface extend at different angles relative to the body axis.

The present invention relates to a safety valve which may be produced in a simple manner and effectively provides emergency degassing when mounted on electrochemical device housings, the safety valve including: a housing defining a cavity and having a top and a bottom portion, the surface of the bottom portion covering an opening in the electrochemical device casing, and at least one protective degassing element provided on the bottom portion and configured to provide a gas through-opening when an internal pressure and/or temperature in the electrochemical device casing exceeds a predetermined threshold; wherein the material thickness of the protective degassing element is smaller than that of the remaining bottom portion. Further disclosed are kits including said safety valve and related electrochemical devices.

A valve for closing a fluid line, comprising: an inlet element with an inlet line; an outlet element with an outlet line; a closing element which, in a first state, allows a fluid passage between the inlet line and the outlet line and which, in a second state, closes the fluid passage, wherein the closing element, in the first state, is fixedly connected to the inlet element or the outlet element and, in the second state, is detached from the inlet element or the outlet element; an actuator which, when actuated, is configured to move the closing element from the first state towards the second state; and a pretension element which is pretensioned and is configured to move the closing element into the second state after actuation of the actuator.

A self-sealing safety valve (10) for a container of pressurised fluid (12) comprises a substantially solid body (14) and attachment means (24) for connecting to a dispensing valve. The self-sealing safety valve includes a substantially central bore (16) extending through both the attachment means and the solid body, and the bore connects an inlet (20) to an outlet (18). The bore comprises at least three parts each of a different diameter: a first part (16a) immediately adjacent the outlet has a first diameter; a second part (16b) located immediately adjacent the first part has a second diameter that is wider diameter than the first diameter; and a third (16c) part located immediately adjacent the second part has a third diameter that is wider than the second diameter. The second part of the bore houses a first biasing means (30). The third part of the bore houses a sealing ball (28) and a second biasing means (38), and the sealing ball is located between the first and second biasing means. The diameter of the sealing ball is greater than the first diameter but smaller than the second diameter and is capable of sealing the second part of the bore. Under normal flow conditions of fluid through the bore, the first biasing means is configured to bias the sealing ball away from the second part of the bore. Under conditions of high pressure fluid flow through the bore, the sealing ball is forced towards a junction (21) between the second and third parts of the bore, against the first biasing means, sealing the outlet.

A membrane puncturing mechanism comprises a first element and a second element arranged with opposing surfaces. At least one opposing surface comprises a sloping region inclined relative to the other opposing surface. The first element is moveable towards and away from the second element. A pin for puncturing a membrane is coupled to the first element such that movement of one of the pin and first element causes movement of both. A spring is operable to bias the first element towards the second element. An actuator is removably positioned between the opposing surfaces, the actuator being withdrawable from between and moveable along the opposing surfaces such that, as the actuator is withdrawn, the actuator progressively moves the first and second elements apart against the bias of the spring so as to load the spring and such that the actuator being fully withdrawn from between the opposing surfaces.