• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an isolation valve with a dead chamber, comprising a body (12) with a fluid passage duct (14), a device for closing (16) the fluid passage in the duct (14). , operable between a fluid passage position and a closed position of the fluid passage in the conduit (14). In its closed position, the closure device (16) forms a dead chamber. A wall of the closure device (16) comprises a through hole (34), in which a decompression device (36) of the dead chamber is disposed. The invention also relates to a hydrocarbon transport facility comprising at least two pipes (152; 154) connected by such a dead-room isolation valve.
    公开号:FR3014163A1
    申请号:FR1361824
    申请日:2013-11-29
    公开日:2015-06-05
    发明作者:Xavier Sucher
    申请人:Total Marketing Services SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an isolation valve with a dead chamber. In the oil field, it is known to implement dead-bay isolation valves on the pipes carrying hydrocarbons, for example. Such valves make it possible to isolate a section of a pipeline in a sealed manner, thus making it possible to stop the supply of a fire, to avoid a leak of hydrocarbons, to maintain the pipeline or to perfectly segregate different products avoiding cross-contamination.
    [0002] This type of isolation valve is particularly interesting because it ensures a double seal: - between the upstream zone and the dead chamber, on the one hand; and - between the dead chamber and the downstream zone, on the other hand. An example of a dead chamber isolation valve is shown in Figure 1. In this case, the isolation valve 10 shown is of the ball type. Such an isolation valve conventionally comprises a body 12 with a fluid passage duct 14, a spherical ball 16, and a rod 18 for actuating the spherical ball 16, enabling the spherical ball 16 to be actuated between a passage position. the fluid through the conduit 14 (position shown in the figure) and a closed position of the conduit 14. The actuation of the spherical ball 16 here consists of a quarter-turn rotation of the spherical turn 16 around the Rod axis 18. The isolation valve 10 of FIG. 1 also comprises upstream and downstream seats 22 in sealing engagement against the spherical ball 16 around the fluid passage conduit 14, on the one hand, and against the body 12, on the other hand. It is known that in such an isolation valve 10, the -tournant has a cavity 32 which forms, in the closed position of the fluid passage conduit, together with the body 12, a dead chamber. This dead chamber contains fluid - hydrocarbon in the application mentioned above - trapped in the cavity 32, at the moment of passage of the spherical ball 16 from its fluid passage position to its closed position of the conduit. fluid passage 14. However, this type of valve can be exposed to temperature variations. An increase in temperature generates. an expansion of the liquid trapped in the dead chamber, which, because of the incompressibility thereof, generates a rise in pressure in the dead chamber. This increase in pressure can, in extreme cases, lead to a bursting of isolation valve. For example, the expansion of a hydrocarbon is of the order of 0.1% of the volume per degree Celsius which, neglecting the expansion of the body of the isolation valve due to its thermal expansion and due to the rise under pressure and considering a perfect seal, leads to a pressure increase of the order of 10 bar / ° C. To reduce the pressure in the dead chamber, it is known to design this type of isolation valve with a device for decompressing the dead chamber. This device may consist of seats adapted to move away from the turn in case of overpressure in the dead chamber. However, such seats impede the sealing of the isolation valve. Alternatively, the decompression device may be disposed outside the body and be connected to the dead chamber by a conduit passing through the body.
    [0003] However, for safety reasons, the isolation valve must, when subjected to a fire: - do not leak in line to the downstream zone, to ensure isolation; - do not leak to the outside of the isolation valve, to avoid feeding the fire in which the valve is located; and - to control the increase in pressure inside the isolation valve and in particular inside the dead chamber to avoid the ruin of the isolation valve. It turns out that the implementation of a decompression device outside the body creates a vulnerability of the isolation valve, especially in case of fire because it is then exposed to fire and high temperatures. Such a solution does not therefore ensure the fire resistance criteria mentioned above. There is therefore a need for a dead-room isolation valve with increased fire resistance. To this end, the present invention proposes a dead-bed isolation valve, comprising a body with a fluid passage duct, a device for closing the fluid passage in the duct, operable between a fluid passage position and a closed position of the fluid passage in the duct, closed position in which the closure device forms a dead chamber, a wall of the closure device comprising a through hole, in which is disposed a decompression device of the dead room. According to preferred embodiments, the invention comprises one or more of the following characteristics: the decompression device is formed by a calibrated valve; - The calibrated valve is screwed, pegged or inserted in force in the wall of the closure device; -, the through hole is formed between the dead chamber and the fluid passage duct; the through hole is formed in the wall of the closure device intended to be disposed upstream of the isolation valve, in the closed position of the fluid passage in the conduit; - The shutter device comprises a rotary plug; - the rotating plug is spherical; the spherical ball valve is of the floating type; the ball-shaped ball is of the arbor type; the dead-bed isolation valve further comprises a second ball-type, floating or shaft-type, actuatable between a closed position of the fluid passage in the duct and a fluid passage position in the duct, the second ball-type turning defining a second dead chamber in the closed position of the fluid passage in the conduit, a third dead chamber being defined between the two ball-type rotators; the two ball valves are associated with upstream seats of the single-piston type, the first ball-bearing being associated with a downstream seat of the single-piston type and the second ball-bearing being associated with a downstream seat. double piston type; the decompression device is disposed in the wall of the first ball-bearing to allow decompression of the third dead chamber in the first dead chamber; - the rotating plug is cylindrical; - the rotating bushel is conical; the turn also comprises two sliders mounted in translation on the conical plug in the body, for example by means of a dovetail, so that a translation of the conical plug along its axis induces a translation of the two sliders according to a direction substantially perpendicular to the direction of the axis of the conical plug; the decompression device of the dead chamber is disposed in one of the two sliders; - The conical plug has a guide shaft of the rotation of the turn; - The closure device comprises two butterflies disposed downstream of each other in the fluid passage duct; and the decompression device is disposed in the wall of a throttle, preferably in the wall of the upstream throttle valve.
    [0004] The invention is also related to a hydrocarbon transport facility comprising at least two pipes connected by a dead chamber isolation valve as described above, in all its combinations. Other characteristics and advantages of the invention will appear on reading the following description of preferred embodiments of the invention, given by way of example and with reference to the appended drawings. Figure 1 shows schematically in section an example of a ball valve in the fluid passage position. FIG. 2 is a diagrammatic cross-section of an example of a conical turning tap, in the closed position. FIG. 3 is a diagrammatic sectional view of a second example of an isolation valve with a conical turn, in the closed position. FIG. 4 diagrammatically shows in section a second example of a ball valve, in the closed position.
    [0005] Figure 5 schematically shows in section a third example of a ball valve, in the closed position. Figure 6 shows schematically in section an example of double ball valve isolation valve in the closed position. FIG. 7 is a diagrammatic cross-section of an example of an isolating valve with a cylindrical turn, in the closed position. Figure 8 shows schematically in section an example of double butterfly isolation valve, in the closed position. The invention relates to a dead-bed isolation valve, comprising a body, a fluid passageway in the body and a shutter device operable between a closed position of the fluid passageway and a crossing position. The shutter device forms, in the closed position, a dead chamber. The closure device has a hole, in particular between the dead chamber, in its closed position, and the fluid passage duct. Inside this hole is a decompression device that prevents the pressure in the dead chamber from exceeding a threshold value critical for the integrity of the isolation valve. This decompression device may in particular take the form of a sleeve with a ball preload against a hole of the sleeve by means of a calibrated spring. Other forms of the decompression device are possible, in particular a double ball and spring device - that is to say in fact two balls mounted one after the other in the socket, each being prestressed by A spring against a respective orifice Such a device with double ball and spring makes it possible to ensure improved sealing.
    [0006] The proposed solution provides a better resistance of the isolation valve in case of fire than the known solutions with decompression device disposed outside the body of the isolation valve. Advantageously, such a solution can be implemented in many types of isolation valves, including turning valves such as double isolation and bleed valves (DBB), DBB plug valves. conical (DBB plug valve), DBB ball valves (DBB double ball valve), ball valves (either ball-type ball valves - trunnion ball valves - floating ball valves), conical plug valves (Tapered Plug Valve) or Cylindrical Plug Valves. The proposed solution can also be implemented in double butterfly valves. In the remainder of the description, the elements that are identical or of identical function bear the same reference sign. For the sake of brevity of the present description, the elements identical to the various examples are not described with respect to each of these examples. In other words, only the differences between the different examples are described in detail, the common elements being described with regard to a single example.
    [0007] Figure 2 illustrates a first example of a ball valve 100, of the conical plug type. In other words, the turn of the ball valve 100 is a conical plug 16. Here, the isolation valve is shown implemented in a hydrocarbon transport facility 150. The isolation valve 100 connects two pipes 152, 154 and makes it possible to control, in particular to interrupt, the fluid communication between the two pipes 152, 154. As illustrated, the turning isolation valve 100 comprises a body 12 inside which is formed a fluid passage conduit 14. The body 12 here forms at the two opposite ends of the fluid passage conduit 14 flanges 28 to allow the attachment of the rotating isolation valve 100 on fluid transport conduits. The body also forms a seat 30 adapted to receive the smallest end of the conical plug 16. Inside this conical plug 16 is formed a cavity 32. This cavity 32 allows the passage of fluid through the conical plug 16 when the it's in its busy position. However, as illustrated in Figure 2, this cavity 32 forms a dead chamber when the conical plug 16 is in its closed position of the fluid passage. Thus, in this position, fluid can be trapped in the dead chamber, when the conical plug 16 is in its closed position of the fluid passage. Furthermore, the conical plug 16 here forms a rod 18 adapted to be connected to a handle or an actuator for manipulating the conical plug 16 between its closed positions of the fluid passage and fluid passage. These positions correspond to two positions angularly spaced a quarter turn, the conical plug 16. Here, remarkably, the wall of the conical plug 16 has a through hole 34 between the cavity 32 and the fluid passage duct 14. Inside this through hole 34 is provided a decompression device 36 of the pressure in the dead chamber. The decompression device is here produced in the form of a valve 36 comprising a bushing 38 pierced at both ends, one end being closed by a ball 40 constrained by a spring 42. The valve can be screwed or pegged into the through hole 34 or inserted by any other means ensuring the retention in position of this valve in the through hole 34. The opening and closing of such a conical tap is conventional. However, in the closed position of the fluid passage of the conical plug 16, the cavity 32 forms a dead chamber comprising fluid. As explained in the introduction, in the event of an increase in temperature in or around the isolation valve 100, the pressure in the dead chamber increases. However, here, instead of this increase in pressure causing the deterioration of the isolation valve 100 and in particular of the body 12, this increase in pressure will open the valve 36 when the pressure will exceed a threshold value corresponding to a force exerted on the ball 38, equal to the force of the spring 42. The pressure in the dead chamber will thus be regulated, can not exceed this threshold value. The deterioration of the body of the isolation valve is thus avoided. In addition, it should be noted that the through hole can be made on the upstream face of the conical plug 16, that is to say on the face facing upstream of the isolation valve, in the closed position 16. Thus, the presence of through hole 16 does not prevent the isolation of the upstream zone with respect to the downstream zone of the conical plug, which is a priority in case of fire. In other words, the sealing of the downstream zone, which is a priority, is thus ensured. Finally, the absence of opening of the body 12 towards the outside ensures a better resistance of the isolation valve 10 with respect to the known isolation valves which have a decompression device outside the body 12.
    [0008] The rotating shut-off valve 200 of FIG. 3 is a DBB tap with a conical plug. The body of the isolation valve 200 is made by several separate pieces 121, 122, 123, 124 screwed together. This way of proceeding allows indeed a greater ease of realization of the body. It should be noted that this way of proceeding is in no way limited to the isolation valve 200 but may instead be used for all the other examples of isolation valves described here. With respect to the isolation valve 100, the isolation valve 200 is essentially distinguished by the fact that the turn 16 is made here by a conical plug 161 on which are mounted two slides 162 free in translation along the axis of the rod 18 161. In the closed position of the fluid passage duct 14 (see FIG. 3), the sliders 162 are pressed against the body by the conical plug 161. Seals (not shown) arranged in grooves 163, 164 seal this shutter position.
    [0009] In addition, the conical plug 161 forms, at its end opposite the rod 18, a shaft 165 intended to be received in the body of the isolation valve 200 to guide the movement of the conical plug 161 relative to the body. . In a manner known in this type of isolation valve, the turn 16 and the body 12 are adapted so that: from the closed position, the control of the control rod causes: o firstly a displacement of the conical plug 161 in the direction of its smaller end towards its greater end, which causes a clearance of the two sliders 162 relative to the body 12, allowing in particular to create a clearance between the joints .et the body 12. This is due in particular to fact that the translational movement of the sliders 162 in the direction of the axis of the conical plug 161 is limited or prevented by the body 12 itself; o then rotating the conical plug together with the sliders 162, to allow the passage of fluid through the isolation valve 200, the cavity 32 in the conical plug 161 being in fluid communication with the fluid passage 14; and from the fluid passage position, the rotation of the control rod causes the reverse movement of rotation of the conical plug together with the sliders 162, and then spacing the sliders 162 which come into contact with the body.
    [0010] To do this, the control rod 18 may for example be actuated via a mechanism not shown and known to those skilled in the art, controlling a rotation of 90 ° transposed successively using a cam in a movement of translation and rotation of the rod 18.
    [0011] In the case of the isolation valve 200, it should be noted that the hole 34 is made through a slide 162 and the conical plug 161, so as to form a continuous hole in the closed position of the fluid passage. However, the operation of the decompression valve 36 is identical to the operation described above with reference to FIG. 2.
    [0012] The isolation valve 300 of Figure 4 is of the type floating sphere (English floating ball). The isolating valve thus has a spherical ball 16 secured to a single rod 18 for controlling the rotation of the ball-shaped ball 16. In particular, the isolating valve does not have a shaft on its end opposite to the ball stem. 18, for guiding the movement of the ball valve 16 in the body 12. Here, two seats 20, 22 are implemented between the ball valve 16 and the body 12, in order to ensure the sealing of the valve. isolation 300, especially in the closed position of the fluid passage. The seats 20, 22 can be of the single-piston effect type (SPE) or SPE (that is to say that the seats are designed to come off the turn in case of overpressure in the dead chamber) ) or double piston effect (DPE) type or DPE (that is, the seats are designed not to peel off the turn in case of overpressure in the dead chamber). Preferably, at least one of the two seats is of the DPE type to insure the upstream and downstream zones. However, because of the presence of the decompression valve 36, it can be envisaged to implement two DPE seats. Indeed, the maintenance of the pressure in the dead chamber at an acceptable level for the turn is ensured by the presence of the pressure-relief valve 36. The isolation valve 400 of Figure 5 is of the ball-type shaft. (trunnion lease valve). This isolating valve is distinguished from the isolating valve 300 of Figure 4 essentially by the presence of a shaft 165 which allows to more accurately guide the movement of the ball valve 16 in the body 12 and maintain the bushel of the makes fluid pressure effects on it. In addition, the decompression valve 36 is here shown screwed inside the hole 34.
    [0013] The isolation valve 500 of Figure 6 is of the type DBB ball valve (double block and bleed valved lease). Such isolation valve is for example described in the application FR-A-2 981 7.20 in the name of the applicant.
    [0014] The isolation valve 500 has two turns 161, 162 formed by two spherical bushels arbés. In a variant, the spherical plugs may be of the floating type. The axes of rotation of the two spherical plugs 161, 162 may for example be angularly offset by a quarter turn.
    [0015] The two spherical plugs 161, 162 are associated with upstream seats 20f, 202 and downstream 221, 222, respectively. The seats are of the SPE or DPE type. Preferably, the first upstream and downstream seats 201, 221 and the second upstream seat 202 are of the SPE type, the second downstream seat 222 being of the DPE type. The second downstream seat 222 is of the DPE type to prevent any leakage of fluid downstream of the isolation valve. In addition, the seats are here associated with springs 481, 482, 502 to ensure the position of the seats against the ball bushings, even in case of wear of these seats. In addition, a decompression valve 36 is disposed in a hole 34 formed in the wall of the first ball valve 161, facing the second ball valve 162, in the closed position of the fluid passage. It should be noted here that the decompression valve 36 is arranged so as to open in case of overpressure in the portion of the conduit between the two spherical plugs 161, 162 to put in fluid communication this portion of the conduit between the two bushels. spherical 161, 162 with the cavity 321 in the first ball valve 16f. Such an isolation valve has three known dead chambers in the closed position: - a first dead chamber in the first ball valve 161; a second dead chamber in the second ball valve 162; and a third dead chamber formed by the portion of the fluid passage conduit 14 located between the two spherical plugs 161, 162.
    [0016] In the event of a rise in temperature in the first dead chamber, the overpressure in this first dead chamber is limited because of the implementation of an upstream seat 201 of the SPE type. Indeed, this type of seat is adapted to take off to allow the passage of fluid in case of overpressure in the cavity in the first ball. The decompression of this first dead chamber is thus done in the upstream portion of the fluid passage duct 14. Similarly, in the event of a rise in temperature in the second dead chamber, the overpressure in this second dead chamber is limited because of the implementation of an upstream seat 202 of the SPE type. The decompression of the second dead chamber is thus done in the third dead chamber.
    [0017] Finally, in case of increase of the temperature in the third dead chamber or in case of increase the pressure in this third dead chamber due to the decompression of the second dead chamber, the increase of the pressure in the third chamber Dead is limited because of the valve 36 which allows the decompression of the third dead chamber in the first dead chamber. The isolation valve 600 of Figure 7 is of the type cylindrical plug valve (cylindrical plug valve). In the case of this isolation valve, the turn is achieved by a cylindrical valve 16. Figure 8 illustrates an isolation valve 700 of the double butterfly type. In the case of this isolation valve 700, the body 12 forms a fluid passage conduit 14. The isolation valve 700 comprises a device for closing the fluid passage conduit 14 comprising two butterflies 16a, 16b arranged in downstream from each other in the fluid passage conduit 14. The two butterflies 16a, 16b here take the form of disks whose section substantially corresponds to the section of the passage duct 14. The two butterflies 16a, 16b are Maneuverable independently of one another, the distance between the two butterflies being at least equal to the diameter of the butterflies 16a, 16b. The cavity 32 forms a dead chamber in the closed position of the two butterflies 16a, 16b. Therefore, in order to avoid an excessive rise in pressure in this dead chamber, the upstream throttle valve 16a is provided with a hole 34 inside which a decompression valve 36 is arranged. Here, the decompression valve 36 comprises two balls. each constrained by a spring against a respective orifice. Such a decompression valve 36 improves the sealing towards the downstream zone. Of course, the present invention is not limited to the embodiments described above, but it is capable of many variants accessible to those skilled in the art. Thus, in particular, the shape of the decompression valve may differ from the examples described. In particular, all the valves described can be implemented in all the isolation valves described. In addition, the ball may in particular be replaced by any device for closing an orifice of or in the socket. The stressing means can also take other forms than that of a helical spring, such as a spring blade. In order to give an order of magnitude, the diameter of the ball may for example be between 4 mm and 1 cm. In addition, other decompression devices can also be implemented. In addition, as an alternative to the ball valve DBB described above with reference to Figure 6, such a valve may comprise first and second SPE type upstream seats and first and second downstream seats of the type DPE. This results in an isolation valve with up to four times upstream to downstream sealing. In addition, such a valve maintains a simple seal in the downstream direction upstream while - 11 allowing the decompression of all three dead chambers upstream by means of the decompression device in the first plug installed. According to another variant of this variant of the ball valve DBB, the second upstream seat is also of the DPE type and the second ball valve is equipped with a decompression device adapted to allow decompression upstream from the second chamber dead in the third dead room.
    权利要求:
    Claims (20)
    [0001]
    REVENDICATIONS1. A dead-room isolation valve having a body (12) with a fluid passage (14), a closure (16; 161; 162; 16a, 16b) of the fluid passage in the conduit (14; ), operable between a fluid passage position and a closed position of the fluid passage in the conduit (14), a closed position in which the closure device (16; 161; 162; 16a, 16b) forms a dead chamber, a wall of the closure device (16; 161; 162; 16a; 16b) comprising a through hole (34), in which a decompression device (36) of the dead chamber is disposed.
    [0002]
    The deadbay isolation valve of claim 1, wherein the pressure relief device is formed by a calibrated valve (36).
    [0003]
    The deadbay isolation valve of claim 2, wherein the calibrated valve (36) is screwed, pegged or force-fitted into the wall of the closure device (16; 161; 162; 16a, 16b).
    [0004]
    4. Dead-bay isolation valve according to one of claims 1 to 3, wherein the through hole (34) is formed between the dead chamber and the fluid passage conduit (14).
    [0005]
    The dead-box isolation valve according to claim 4, wherein the through hole (34) is formed in the wall of the closure device (16; 161; 162; 16a, 16b) to be disposed towards the upstream of the isolation valve, in the closed position of the fluid passage in the conduit (14).
    [0006]
    A dead-room isolation valve according to any one of claims 1 to 5, wherein the closure device (16; 161; 162; 16a, 16b) comprises a rotary valve (16; 161; 162).
    [0007]
    The deadbay isolation valve of claim 6, wherein the rotary plug is spherical (16; 161; 162).
    [0008]
    The dead-bed isolation valve of claim 7, wherein the ball valve (16) is of the floating type.
    [0009]
    The dead-room insulated valve according to claim 7, wherein the ball valve (16; 161; 162) is of the tree type.
    [0010]
    10. Deadbay isolation valve according to one of claims 7 to 9, further comprising a second ball-type (162), of the floating or shafted type, operable between a closed position of the fluid passage in the conduit (14) and a fluid passage position in the conduit (14), the second ball bearing (162) defining a second dead chamber in the closed position of the fluid passage in the conduit (14), a third dead chamber being defined between the two ball turners (161; 162).
    [0011]
    The deadbay isolation valve according to claim 10, wherein the two ball tumblers (161; 162) are associated with upstream piston-type upstream seats, the first ball-bearing (161) being associated with a downstream seat of the single-acting piston type and the second ball-bearing (162) being associated with a downstream seat of the double-acting piston type.
    [0012]
    A dead-room isolation valve according to claim 10 or 11, wherein the decompression device (36) is disposed in the wall of the first ball-bearing (161) to allow decompression of the third dead chamber in the first dead room.
    [0013]
    The dead-room isolation valve of claim 6, wherein the rotary plug (16) is cylindrical.
    [0014]
    14. Dead-bay isolation valve according to claim 6, wherein the rotary plug (16; 161) is tapered.
    [0015]
    15. A dead-bed isolation valve according to claim 14, wherein the turn also comprises two sliders (162) mounted in translation on the conical plug (161) in the body (12), for example by means of a dovetail, so that a translation of the conical plug (161) along its axis induces a translation of the two sliders (162) in a direction substantially perpendicular to the direction of the axis of the conical plug (161).
    [0016]
    16. A dead-room isolation valve according to claim 15, wherein the decompression device (36) of the dead chamber is disposed in one of the two sliders (162).
    [0017]
    17. Isolation valve with dead chamber according to one of claims 14 to: 16, wherein the conical plug (16; 161) has a shaft (165) for guiding the rotation of the turn.
    [0018]
    18. A dead-room isolation valve according to any one of claims 1 to 5, wherein the closure device comprises two butterflies (16a, 16b) disposed downstream of each other in the passage duct. of fluid (14).
    [0019]
    The deadbay isolation valve of claim 18, wherein the pressure relief device (36) is disposed in the wall of a throttle (16a, 16b), preferably in the wall of the upstream throttle valve (16a).
    [0020]
    20. A hydrocarbon transport facility (150) having at least two pipes (152; 154) connected by a dead-bay isolation valve according to any one of the preceding claims.
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    同族专利:
    公开号 | 公开日
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    US20170002934A1|2017-01-05|
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    PL3074671T3|2018-07-31|
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    WO2015079034A1|2015-06-04|
    NO3074671T3|2018-08-25|
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    法律状态:
    2015-10-23| PLFP| Fee payment|Year of fee payment: 3 |
    2016-10-24| PLFP| Fee payment|Year of fee payment: 4 |
    2017-10-20| PLFP| Fee payment|Year of fee payment: 5 |
    2018-10-24| PLFP| Fee payment|Year of fee payment: 6 |
    2020-10-16| ST| Notification of lapse|Effective date: 20200905 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1361824A|FR3014163B1|2013-11-29|2013-11-29|STIRRUP TAP WITH DEAD CHAMBER|FR1361824A| FR3014163B1|2013-11-29|2013-11-29|STIRRUP TAP WITH DEAD CHAMBER|
    DK14808573.1T| DK3074671T3|2013-11-29|2014-11-28|Shut-off valve with vacuum chamber|
    PL14808573T| PL3074671T3|2013-11-29|2014-11-28|Isolation valve having a vacuum chamber|
    US15/039,925| US10012317B2|2013-11-29|2014-11-28|Isolation valve with a dead chamber|
    EP14808573.1A| EP3074671B1|2013-11-29|2014-11-28|Isolation valve having a vacuum chamber|
    NO14808573A| NO3074671T3|2013-11-29|2014-11-28|
    PCT/EP2014/075992| WO2015079034A1|2013-11-29|2014-11-28|Isolation valve having a vacuum chamber|
    ES14808573.1T| ES2666737T3|2013-11-29|2014-11-28|Vacuum Chamber Isolation Valve|
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