Abstract: The invention relates to a valve comprising a housing and a closing member arranged in the housing, from which member a shaft protrudes via which the closing member is rotatable in the housing. In order to provide a working and easy-to-use valve, the closing member comprises a sector closing the opening, a flexible sector having a thinner wall than the closing sector, a guiding sector having the same radius (R) as the inner surface of the housing wall, and an open sector.

Abstract: A valve for liquids includes a main body and an upper lid or a connector. The main body is provided with a flow passage, an annular connecting circumference, an opening surrounded by the annular connecting circumference, and at least a metal ring integrally wrapped in the annular connecting circumference. The upper lid or the connector is provided with an annular connecting circumference having at least one metal ring integrally wrapped in it. Therefore, after having the main body combined with the upper lid or the connector, the valve can withstand comparatively large fluid pressure so as to prolong service life and be used to a wider application.

Abstract: An air venting valve for removing air from a vulcanising mould of a vehicle tyre and method for removing air from a vulcanising mould of a vehicle tyre by the aid of air venting valve, in which air venting valve there is a body (2) functioning as an air channel and an inner part (3) moving in its longitudinal direction which body comprises a stem (4), an outer diameter of which is smaller than an inner diameter of the body, and a valve disc (5) at an inner end of the stem on the side of a mould surface, a diameter of which valve disc is larger than the inner diameter of the body, which valve disc supports itself in a closing position of the air venting valve on a stop surface of the body and is in an open position at a clearance from said stop surface, and in which a spring member has been arranged in the air venting valve for forcing the inner part in a predetermined position, particularly for opening the valve to the open position when a blank is removed from the vulcanising mould, and the body is substanti

Abstract: The invention relates to a regulating valve, which is attachable in particular in a bore, executed with a female thread, of a hydraulic door closer. The regulating valve has a body adjoined by a regulating area. The regulating valve also has a thread provided with an anti-rotation element. The thread, including the anti-rotation element, being screwed into the female thread of the bore. In order to provide a regulating valve of a simple design, in which any unwanted adjustment of the regulating valve during operation is excluded, the anti-rotation element of the regulating valve has a plastic material layer at the thread flanks of the thread. The plastic material layer cooperates with the female thread of the door closer.

Abstract: The present invention relates to a non-return valve (100) intended to be joined to a container (11) for air or liquids. The non-return valve is formed of non-rigid plastic or rubber material (1, 15), which forms reliable, tight non-return valve function in an opening channel (2) of the non-return valve. The invention is primarily characterized in that a resilient device (5) is arranged in a channel (50) arranged on the side of the opening channel (2) of the non-return valve and that said resilient device (5) extends from one side (52) of the channel (50) to the opposite side (52) of said channel (50). The invention also relates to a method for producing in a common stage the non-return valve together with a container (11) or for joining said non-return valve to a container (11) after the production of the non-return valve.

Abstract: A check valve for a fluid handling system is disclosed, the check valve having a main body with a poppet valve disposed therein and a spring urging the poppet valve into abutment with an inner surface of the main body, wherein the check valve facilitates a flow of fluid in one direction and militates against the flow of fluid in an opposite direction.

Abstract: A regulating valve, which is attachable in particular in a bore, executed with a female thread, of a hydraulic door closer. The regulating valve has a body adjoined by a regulating section and has a thread located at the body. In order to provide a regulating valve which has a simple configuration, and in which an unwanted, independent adjusting of the regulating valve is excluded during operation, at least one prominence is provided in a reception for an insert part. The prominence engages in a surface of an insert part such that, upon an axial rotational movement of the regulating valve, the insert part is moved in rotational direction. The insert part cooperates in a clamping and a sealing manner with the bore or the female thread of the door closer. In one embodiment, the prominences act as a cam for the insert part.

Abstract: A valve assembly is disclosed for mounting through a wall having a first face and a second face defining a thickness there between. The valve assembly includes a valve body housing having an axially-extending inner bore. A valve body is telescopically received in the inner bore of the valve body housing, such that the valve body is axially movable with respect to the valve body housing. A valve is nested in a recess of the valve body. A locking element selectively engages the valve body housing and the valve body to lock a position of the valve body relative to the valve body housing.

Abstract: The invention relates to a valve coupling (1.1) having a discharge part (2.1) and a receiving part which can be coupled to the discharge part and which has a valve function which, in the coupled state, allows the transmission of a fluid or paste-like material from the discharge part to the receiving part. In the decoupled state, the discharge part and the receiving part are closed in a fluid-tight manner. The discharge part has a discharge valve, and the receiving part (3.1) has a receiving valve. The coupling or decoupling results in an opening or closing of the valves and is carried out by elastic deformation, wherein, in the case of coupling, the valves are opened only when the discharge part is connected to the receiving part in a fluid-tight manner, and in the case of decoupling, the valves are closed before the fluid-tight connection is broken.

Abstract: A valve device of an application device for applying fluid to a substrate comprises a valve body, a valve housing with inner chamber and valve seat, a supply fluid chamber, an electromagnetic valve actuating device with valve piston and an adjusting piston. The valve nozzle is detachably mounted on the nozzle side of the valve device. The valve device has a nozzle plate which closes the valve body at the bottom on the nozzle side, with mounting opening for the valve piston. The valve housing is designed in the form of a nozzle orifice which is a closure member that can be fitted on the mounting opening from below and removed. The valve nozzle forms part of the valve housing. The valve piston is exposed through the mounting opening of the nozzle plate for removal and fitting when the closure member is removed. The valve device is provided with at least one rectilinear fluid duct that connects the supply fluid chamber to the valve seat.

Abstract: The invention provides a highly reliable plasma processing apparatus having stable sealing performance. The vacuum processing apparatus comprises a vacuum vessel having its inside decompressed; an opening disposed in a wall of the vacuum vessel for communicating the inside with the outside thereof and through which a sample to be processed is taken in and out; a valve body 701 disposed outside the wall for airtightly sealing or opening the opening; and a drive unit for driving the valve body to carry out the sealing or opening operation, the drive unit comprising a first member 705 coupled to an actuator 702 that moves along a substantially linear first direction as a result of operation of the actuator, a second member 706 coupled to the first member 705 that moves along a substantially linear second direction that intersects with the first direction, and the valve body 701 coupled to the second member that seals the opening as a result of the movement of the second member.

Abstract: A hydraulic directional valve having an electromagnetic actuating unit and a valve section, an essentially cylindrical, blind hole-like receptacle being formed on one component of the actuating unit, a flange section of a valve housing of the valve section engaging in the receptacle, the flange section being provided with an angular groove which extends in a circumferential direction, and an essentially hollow cylindrical wall of the receptacle in the region of the annular groove engaging in said annular groove in such a way that it bears on the groove base of the annular groove, along the entire circumference of said annular groove. The torsional rigidity between the flange section and the wall is increased. In this context, particular emphasis is placed on processing reliability and economic viability of the connecting process.

Abstract: A valve assembly for sealing and control of a fluid, gas or dry material. The valve assembly includes a seal assembly having a hollow seal, a related valve body, and an actuator assembly. The valve body has a generally circular internal cavity with the seal assembly having a generally tubular solid wall defined tip having a flexible wall portion containing a seal element used to seal against both static and dynamic forces. An actuator assembly actuates the seal assembly. The seal assembly is situated coaxially within the valve internal cavity and thereby defines an internal fluid passageway within the valve body.

Abstract: An apparatus for isolating two regions at different pressures is provided, comprising a chamber having a floor, an open top face, and side walls having at least two apertures opposite one another. The chamber further comprises a dividing plate disposed within the chamber, wherein the dividing plate is attached with the floor and the side walls of the chamber, and wherein the dividing plate has at least one opening opposite each aperture and the dividing plate forms a first region and a second region within the chamber. The chamber also includes a lid comprising a plate, wherein a bottom surface of the plate is configured to couple with the dividing plate when the lid is placed on the top face of the chamber so as to prevent deflection of the dividing plate, and wherein the lid closes the top face of the chamber when placed thereon.

Abstract: A hybrid valve body is a multi-piece valve body formed of a brass component and a first non-brass component. The brass component and the first non-brass component are held together by a second non-brass component, such that the brass component and the first and second non-brass components need not be screwed together or otherwise fastened or moved against one another in a manner which could contribute to corrosion. The hybrid valve body realizes a substantial reduction in the amount of brass that would otherwise be used to form the valve body.

Abstract: Apparatus to connect a valve stem to a valve plug and, more particularly, apparatus to connect a threaded valve stem to a valve plug of a control valve are disclosed. An example apparatus includes a threaded valve stem received in a threaded opening of a valve plug and a securement member received in an adjacent opening extending from at least one of the threaded opening or an exterior surface of the valve stem to secure non-rotatably the threaded valve stem to the valve plug.

Abstract: The application relates to shipping container systems that include a large multi-layered flexible container (“flexitank”) disposed inside a large rigid shipping container which has an open end with one or more doors capable of an open or closed position, and further including one or more bulkhead assemblies, one of the bulkhead assemblies interposed between the flexitank and the open end of the rigid container and/or the doors. In at least one specific embodiment, the bulkhead assembly includes a first brace disposed vertically along a portion of the first side wall inner surface; a second brace disposed vertically along a portion of the second side wall inner surface; and a bulkhead panel member extending horizontally between the first brace and the second brace. In other embodiments, bulkhead assemblies may utilize generally curved or “swept” bulkhead bars, which do not require vertical braces.

Abstract: A control valve (100,200) with a two-piece shifting mechanism is provided. The special control valve has two levers, one is a sealing lever (106,206) and the other is a shifting lever (104,204). The sealing lever (106,206) has a channel (116,216) on one of its ends to couple together different ports (SP, S, P, IS) to change the airflow direction. Each lever has its own axis. The shifting lever and the sealing lever interact through an oval opening (114) and a cylindrical boss (112), obtaining two angular range motions. When a small angular input is put on the shifting lever it will produce a large angular output at the second end of the sealing lever. It will achieve a multiple-position switching.

Abstract: A diaphragm for use in a valve assembly, comprising at least one sealing portion and a fixation portion, characterized in that the fixation portion and the at least one sealing portion are connected by a flexible portion.

Abstract: Collets for coupling rotary actuators to valves are disclosed. An example collet includes a first plurality of flexible members configured to be coupled to an elongated member and each having a first inner surface and a first outer surface. The first inner surface and the first outer surface define a first cross-sectional shape. The example collet further includes a second plurality of flexible members configured to be coupled to the elongated member and each having a second inner surface and a second outer surface. The second inner surface and the second outer surface define a second cross-sectional shape that is different from the first cross-sectional shape of the first plurality of flexible members.

Abstract: There is provided a fluid control apparatus which can reduce the number of members and can improve the assembling operation efficiency. A pressure indication device 4 to be replaced with a relatively-higher frequency is coupled to a base block 5 existing thereunder through male screw members 17 from above. An on-off valve 6 to be replaced with a relatively-lower frequency has, at its lower portion, a block-shaped main body 6a formed integrally therewith. The main body 6a of the on-off valve 6 is coupled to the base block 5 through male screw members 18 in the forward and rearward directions.

Abstract: Methods and apparatus for providing a gas to a slit valve opening are provided herein. In one embodiment, a slit valve is described. The slit valve includes a housing having an opening, the opening defined by a plurality of interior sidewalls and sized to allow a substrate to pass therethrough, a door adapted to selectively seal the opening, a gas inlet formed in the housing, and a plurality of nozzles disposed in or on at least one of the plurality of interior sidewalls, each of the plurality of nozzles in fluid communication with the gas inlet and the opening.

Abstract: A multi-port valve arrangement and removable valve element for use in sanitary environments that comprises at least three ports formed by the joining of at least two valve casing bodies at angles necessary to accommodate multiple connecting fluid streams. A seamless, flexible element is used within the valve arrangement to connect the fluid streams. The valve casings may be hinged on one side to permit removal of the top portion of the valve casings and removal/exchange of the flexible element without complete disassembly of the valve casing and without the use of tools.

Abstract: A valve block includes at least a first connection and a second connection. Both connections are connected to each other inside the valve block to temporarily change flow paths in a coolant device and/or to fill the coolant device and/or empty the coolant device. The valve block may be made of a coolant and pressure-resistant plastic and may be manufactured by an injection molding method.

Abstract: There is provided a fluid controller having an enhanced vibration preventing characteristic without affecting pressure controlling operations. A valve element 4 is moved with respect to a valve seat 3 due to a change of balance between a fluid pressure acting on a diaphragm 10 and an elastic force of a pressure-setting spring 13, thereby controlling a pressure of a fluid. A vibration prevention member 17 is placed in a disk-shaped movable member 12 which moves integrally with the diaphragm 10. The vibration prevention member 17 includes a casing which incorporates therein a weight member interposed between elastic members.

Abstract: A valve has a valve body provided on its inner peripheral surface with a seat ring, a stem arranged to extend in a direction substantially perpendicular to the axis of a flow passage defined in the valve body, and a valve element rotatably supported through a bush attached to the stem, and opens or closes the flow passage by pressing or separating the valve element against or from the seat ring in the valve body in accordance with the rotation of the valve element. The valve body is molded after the valve element, the seat ring, the stem, and the bush are placed in predetermined positions in a mold.

Abstract: A tapping valve with a plastic valve housing for shipping and storage tanks for liquids, which are equipped with an inner tank with a filling socket and a drain socket for connecting the tapping valve, an outer jacket of a metal cage or sheet metal, and a pallet-like metal support frame. The tapping valve is screwed by means of the inlet socket of the valve housing onto a connecting flange, which is designed as a threaded flange, is made of an electrically conductive plastic material, and is welded onto the drain socket of the inner tank. The connecting flange of the valve housing is connected with the support frame or the outer jacket of the shipping and storage tank by an electric grounding conductor.

Abstract: A novel valve assembly is provided. In one embodiment, the valve assembly includes a seat plate having a plurality of fluid conduits. The valve assembly may also include a plurality of poppet assemblies. In some embodiments, a poppet assembly of such a plurality includes at least one fluid port and a housing configured to be coupled to the seat plate to facilitate flow of a fluid through a respective fluid conduit via the at least one fluid port of the respective poppet assembly. Other devices, systems, and methods related to poppet assemblies are also disclosed.

Abstract: An apparatus for controlling medium flow, especially for controlling dilution liquid flow in connection with the headbox of a paper-making machine or a cardboard-manufacturing machine, which apparatus comprises a valve which controls dilution flow, which valve consists of a valve housing, a stem part and a flow channel between an inlet and an outlet of the valve. The stem part is movable in the housing between at least two positions, a first position in which the flow path between the inlet and the outlet is open, and a second position in which the flow path is closed, and the stem part and/or housing is designed to direct the medium flow at least in the vicinity of the outlet opening.

Abstract: A valve unit is connected to a fixed member and an external member. The valve unit includes an actuator to actuate a valve member for communicating and blocking a fluid passage. The valve unit includes a housing defining a chamber therein for absorbing variation in pressure. A mount member secures the housing to the external member. A protruding portion is provided at a location other than a location of the mount member. The protruding portion outwardly extends, thereby being inserted into an insertion hole of the fixed member. A bias member is provided to a substantially annular groove in an outer periphery of the protruding portion. An eccentrically positioning unit positions a bottom surface of the substantially annular groove eccentrically with respect to the insertion hole to bias the bias member to an inner periphery defining the insertion hole.

Abstract: A fuel injector includes first and second electrical actuators positioned within an injector body. First and second pairs of electrical conductors extend from a socket connector outside of the injector body to the first and second electrical actuators, respectively. The electrical conductors extend through an elastomeric sealing member that seals against fuel leakage from the fuel injector. The elastomeric sealing member provides annular sealing ridges in sealing contact with an access passage of the injector body and includes individual conductor seal passages that form seals around the outer surface of the individual electrical conductors. The elastomeric sealing member includes features that facilitate assembly of the fuel injector in a manner that reduces risk of damage to the sealing strategy.

Abstract: A regulating valve, which in particular is attachable in a bore of a hydraulic door closer formed with a female thread. The valve has a body, having an anti-rotation protection and a thread, which can be disposed in the female thread of the bore. A regulating area is attached to the body. The anti-rotation protection has at least one groove, which is disposed at the thread and accommodates an elastic element.

Abstract: A filter system includes a plurality of filter assemblies coupled to a common receiving chamber. Each filter assembly is arranged so that filtered water can flow into the receiving chamber under the influence of gravity and pressure from the difference in water level on the outside of the filter assemblies and the water level within the receiving chamber as maintained by a drain or pump within the chamber. Each filter assembly includes an upright intake tube having inlet openings spaced vertically along the intake tube. A filter housing surrounds each intake tube and is spaced from the intake tube by a distance sufficient to receive a filter element between the intake tube and the housing. A cap secures the top of the filter assembly so that all water passing into one of the inlet tube openings must have first passed through the housing and the filter element. Blocking devices are used to change one filter element while the filter system continues to operate via the other filter assemblies.

Abstract: An engine valve assembly is provided with a valve housing configured to promote easy fastening and removal of the valve assembly from an engine cover. The housing has a first wall and a side wall that extends therefrom to partially define an interior cavity with a cavity opening opposite the first wall. In some embodiments, the first wall has a generally teardrop-shaped surface. The first wall has a valve opening and a fastener opening that is spaced from and aligned with the valve opening along the first wall. A valve body is supported by the valve housing at least partially within the interior cavity, and may be press-fit therein. The valve housing mounts to the engine cover with the fastener inserted through the fastener opening to extend through the interior cavity and fasten to the engine cover, with the valve body extending into the engine cover.

Abstract: A bonding means for electrically coupling a first component and a second component at an interface. The bonding means including at least one electrically conductive bonding puck positioned between the first component and the second component. The bonding puck being disposed within a recess formed in at least one of the first component and the second component. The at least one electrically conductive bonding puck providing electrical bonding between the first component and the second component and establishing electrical continuity therebetween.

Abstract: A blow molding machine having the valves integrated into the valve block (100) is disclosed. The valve pistons (110) form annular rings stacked vertically along the stretch rod (104) axis. The valve pistons activate by moving up/down along the stretch rod axis. The valve seat for each vertically stacked valve is formed radially around the stretch rod.

Abstract: A single chamber two-way servo-operated valve comprising: a valve body (1) presenting an inlet aperture (2), an outlet aperture (3) and an access (11); a cover (12) to close the access (11) of the valve body (1); a port (4) dividing the valve body interior into an inlet section (5) and an outlet section (6); a valving element (8) comprising a disc (10) for closing said port (4); and an actuating chamber (15) at least partially defined by the cover (12), the disc (10) and a flexible diaphragm (14) connected to the valving element (8), the disc (10) of said valving element (8) comprising a rigid central core (50) which is at least partially covered by a rubber layer (18) adhering to said central core (50), said rubber layer (18) extending from the edge of the disc (10) to form the flexible diaphragm (14).

Abstract: A steam valve is provided with a valve body, a valve seat, and a valve rod provided for the valve body. The valve body has a bottom portion to which a recessed portion is formed, and the recessed portion has an edge, which is positioned on an upstream side of a place at which a shock wave is generated in steam flowing through a steam path defined by the valve body and the valve seat.

Abstract: The reliability of a valve gear in which a cobalt-based alloy is welded by plasma powder building-up welding is improved. Disclosed is a valve gear including a bearing 2 having a sliding surface against a valve shaft 1, the valve gear being characterized in that: a welded layer 12 made of a heat-resistant cobalt-based alloy, based on plasma powder building-up, is formed on the sliding surface against the valve shaft 1; and the welded layer 12 includes a first welded layer 12a formed on the surface of the bearing 2, having a dilution ratio of 5 to 25% and a second welded layer 12b formed on the first welded layer 12a, having a dilution ratio of 50% or less of the dilution ratio of the first welded layer 12a. The dilution ratio is a parameter indicating the penetration amount of the welding metal into the base metal, and means a value obtained by B/A×100 (%) wherein A represents the total amount of the welded metal and B represents the amount of the welding metal penetrating into the base metal.

Abstract: The present invention is directed toward an anti-contamination arrangement for a valve having a valve housing, a bushing positioned in the valve housing, a valve member including a valve shaft and a valving portion operable for engaging a valve seat, slidably disposed through the bushing, and a supply port operably associated with the valve member. The valve also includes a control chamber controlled by the valving portion, and a valve seat positioned between the supply port and the control chamber. The valve member is operably associated with the valve seat for controlling the flow of fluid from the supply port to the control chamber upon the movement of the valve member in relation to the valve seat. There is also an anti-contamination arrangement positioned between the bushing and the valve shaft for collecting and removing contamination from the valve member.

Abstract: The present relates to a beverage valve assembly (5) comprising:—a bottom wall section (12);—a tubular part (14) extending downward from the bottom wall section;—an outer apron (9) standing up from the bottom wall section (12); wherein the tubular part (14) has a top opening (21) to receive a dispensing element (3), whereby the top opening (21) is preferably arranged in the middle section of the upper outer surface of the bottom wall (12), and the tubular part (14) has an upper inner tubular wall section with at least one sealing surface (15,16), the outer standing up apron (9) is arranged at a distance from the top opening (21) of the tubular part (14), whereby the bottom wall (12) section comprises at least one valve positioned between the top opening (21) of the tubular part (14) and an inner side wall section of the outer standing up apron (9).

Abstract: A valve structure includes a partition wall, a communicating bore, a valve body and a restraining portion. The partition wall is provided in a fluid container for dividing the fluid container into a first fluid chamber and a second fluid chamber. The communicating bore is provided at the partition wall for establishing a fluid communication between the first and second fluid chambers. The valve body is provided at the partition wall for establishing and interrupting the fluid communication between the first and second fluid chambers. Further, the valve body includes an umbrella shaped valve portion being flexibly deformable for opening and closing the communicating bore. The restraining portion is provided for restraining a deforming amount of the valve portion when the valve portion is deformed in a direction to be separated from the partition wall.

Abstract: A coupler for a hydrant assist kit includes a single piece construction having an inlet, an outlet, a basin, and a drain, the drain above the inlet and at a bottom of the basin. A hydrant assist kit connects a water line to a hydrant with the coupler and a sleeve attached to the coupler to protect the hydrant pipe.

Abstract: Devices for cleaning vessels, especially swimming pools, are discussed. The devices may include a non-linear flow path in a gap surrounding an in-line valve. This non-linearity permits lengths of concentric pipes forming the gap to be decreased without sacrificing operational performance of the devices. Valves forming parts of the cleaning devices may be diaphragms but shaped, sized, reinforced, or configured differently than existing valves and may have collapsible segments whose interior shape resembles an ellipse in transverse cross-section. Co-molding of diaphragms and pipes may occur, and inner and outer cups may be used to fix relative positions of various components of the devices.

Abstract: Method for filling at least one compressed gas tank with at least one gas, wherein a reference pressure gas tank is formed in which a measurement can take place of at least one measurement variable which is relevant for the state in the reference pressure gas tank, wherein the compressed gas tank and reference pressure gas tank are flow-connected at least at times, wherein each compressed gas tank and the reference pressure gas tank have in each case one opening through which a gas can be filled and extracted, wherein in a filling process, at least one gas is filled through the opening into the at least one compressed gas tank and at least at times into the reference pressure gas tank, is characterized in that a measuring sensor is inserted through the opening into the reference pressure gas tank, and at least one measurement variable is measured by the measuring sensor at least during a part of the filling process.

Abstract: A method and apparatus for pressure testing a plumbing system, includes a resilient body having a body diameter. The resilient body is adapted to elastically deform by when passing through a service opening that is smaller than the body diameter and then resiliently return to the body diameter. A sealing surface is carried by the resilient body. A rigid coupling is positioned on the resilient body. The rigid coupling is adapted for coupling the resilient body to a shaft, such that the shaft is able to manipulate movement of the resilient body. The resilient body is inserted into a service opening of a plumbing system to be pressure tested. The resilient body flexes while being inserted and then resiliently returns to the body diameter with the sealing surface performing a sealing function.

Abstract: A method is provided for retrofitting a conventional plastic valve to allow the valve to be utilized in a waste water system. The method includes strengthening the valve or valve housing using various methods.

Abstract: An air discharge valve for a bedclothes compressing-and-storing bag includes a lower main body having an air passage and a packing-receiving groove. An upper body is coupled to the lower main body to define an internal space. The upper body has a plurality of air discharge holes and a central guide opening. A valve body positioned in the internal space and slidably inserted into the guide opening of the upper body for movement between an open position and a closed position. A packing is fitted to the packing-receiving groove of the lower main body, the packing provided with an outer flange portion and an inner flange portion. A top cover is fitted to the valve body for movement together with the valve body, the top cover shaped and sized to close off the air discharge holes of the upper body when the valve body is in the closed position.

Abstract: A housing for use in high-pressure fluid applications, comprising a first passage defining a first axis (P1) and a second passage defining a second axis (P2), wherein the first and second passages intersect at an opening defined by an intersection at one end of the second passage. When sectioned on a plane normal to the second axis (P2) and not intersecting the first passage, the intersection defines an ellipse (E) in the plane and centred on the second axis (P2), the ellipse having a major axis equal in length to the width (D2) of the intersection and a minor axis equal in length to the height (D1) of the intersection. A wall of the intersection describes a curve in the plane, the curve passing through the points where the major and minor axes of the ellipse (E) meet the perimeter of the ellipse (E), and through points which lie outside the ellipse (E) and which are offset from the ellipse (E) by an offset distance (K).

Abstract: A cell culture vessel includes a housing defining a reservoir, an inlet and an outlet in fluid communication with the reservoir, a valve assembly, and an antimicrobial filter. The valve assembly includes (i) a side wall defining a passageway for fluid flow between the reservoir and the outlet, (ii) a floating element disposed in the passageway and configured to float on the culture medium, (iii) a stop feature configured to sealingly engage the floating element to prevent the culture medium from flowing from the reservoir through the outlet, and (iv) a capture feature configured to retain the floating element within the passageway and to allow fluid to flow from the reservoir through the passageway. The microbial filter is positioned such that air flowing in the outlet to the passageway passes through the filter.