CN101675282B - Pressure relief valve and method for subsea components - Google Patents
Pressure relief valve and method for subsea components Download PDFInfo
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- CN101675282B CN101675282B CN2008800143794A CN200880014379A CN101675282B CN 101675282 B CN101675282 B CN 101675282B CN 2008800143794 A CN2008800143794 A CN 2008800143794A CN 200880014379 A CN200880014379 A CN 200880014379A CN 101675282 B CN101675282 B CN 101675282B
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- sealing
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- test port
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
- F16K17/046—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces the valve being of the gate valve type or the sliding valve type
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
A relief valve for a pressure vessel includes a housing having an inner bore extending between an inlet and an outlet, a piston located within the inner bore, a spring disposed about the piston and configured to bias the piston into a closed position, a test port in communication with the inner bore, a removable test plug sealingly disposed within the test port, and a first seal and a second seal disposed within the inner bore on either side of the test port, the first and second seals configured to engage the piston and hydraulically isolate the inlet from the outlet when the piston is in the closed position.
Description
Open background:
Open field
Embodiment of the present disclosure relates to the pressure release system that is used for the seabed container.More specific, embodiment of the present disclosure relates to the relief valve that is used for the seabed container.
Background technique
Recover the oil when proceeding to the big degree of depth when the seabed, equipment and method must be suitable under this severe rugged environment, operating.The major obstacle of the progress of recovering the oil in the deep water is the extreme high pressure in these degree of depth experience.Therefore, at these degree of depth places, usually use the pressurized container of keeping an atmospheric internal pressure to come protection equipment.
Be used in the seabed to keep and to simulate and be known as " a barometric pressure chamber " in the Pressure vessels of the similar ambient pressure of the ambient pressure that the surface experienced.This chamber conventional application in petroleum industry can be the pressure-sensitive component in protection seabed.When pressure chamber is in the seabed, slowly reveal and it is relatively promptly got back under the lip-deep situation then, it can comprise highpressure, perhaps is higher than the pressure of normal atmosphere pressure.Reach near 10 in the degree of depth, during 000ft, this changeable pressure gets very big (about every foot degree of depth 0.47psi), even up to 5000psi.The accumulation of big pressure possibly can discharge significant amount of energy in the chamber of seabed when fetching and be brought to the surface.Therefore, delivery system can be embodied as when chamber is taken back to the surface pressure in the chamber is reduced to and can accept and the level of safety.
Pressure relief valve is located in the various systems pressure maximum is restricted to the threshold level that limits less than in advance usually.For example, pressure relief valve can be located at the delivery side of pump place and make supply line can not be pressurized to excessive levels.If the Overpressure of a safety valve threshold level, relief valve is opened, and leads to the path of reservoir or storage tank thereby form.Another pressure relief valve can be located at the working port place of control valve assembly, and hydraulic actuator such as piston and cylinder combination, is connected on this control valve assembly.This layout can prevent that the impact loading or the inertia that cause owing to the load that acts on piston and the cylinder barrel from overloading.Cause excessive high pressure in the hydraulic line that is attached on the cylinder barrel if this loads on, then the working port pressure relief valve is designed to open so that pressure is discharged into system.The working port relief valve can stay open up to loading condition no longer exist and hydraulic line in pressure be reduced to and be lower than threshold pressure.
One type relief valve comprises by spring biasing and leaning against on the valve seat to keep the displaceable element that valve is in closed state.When the pressure on acting on the valve element surpassed spring force, the valve element moved away from seat, thereby opens pressure relief valve.In such valve, as long as one surpass spring force, valve is promptly opened, in case and pressure be reduced to and be lower than spring force, valve is closed immediately.
But, in some applications, possibly hope that valve is not opened immediately when the Overpressure of a safety valve threshold value, but postpone to open, there is the time of specified rate up to excess pressure.Therefore, this pressure relief valve can receive the influence above the short endurance pressure events of the chance of threshold level lessly.Yet when pressure was longer than the time of established amount above the threshold value setting, valve was opened, before the damage that possibly take place hydraulic system, to discharge this pressure.Equally, under some situation, hope that also the delay valve closure keeps below threshold value to guarantee pressure.This can prevent under the situation that still requires pressure to discharge that the instantaneous pressure reduction from making valve closed.
Many relief valves are disclosed in the prior art.The U. S. Patent that transfers Holder discloses a kind of pressure relief valve the 6th, 957, No. 660, and it has the valve element that is biased to operating position by spring.Pressure controlled or that regulate is applied on the valve element with the antagonism spring force.When the pressure on being applied to the valve element surpassed spring force, pressure discharges to be opened.When the pressure on being applied to the valve element was reduced to and is lower than spring force, valve was closed.
In addition; The U. S. Patent that transfers people such as Reinicke discloses releasing and relief valve of a kind of storage tank that is used to comprise pressure fluid for the 3rd, 945, No. 395; It is characterized in that coaxial release and the relief valve member has the seat that is bonded with each other with the outlet of releasing of closed valve.Release and relief valve also comprises the device of actuating associated therewith, so that said seat breaks away from, storage tank is inner releases being communicated with between exporting with valve during filling storage tank, to open.The relief valve member is actuated to move said relief valve member by the hydrodynamic pressure that surpasses predetermined value in the storage tank said seat is broken away from, thereby and once more storage tank inner release to set up between exporting with valve be communicated with, thereby make the excess fluid pressure releasing.
American Petroleum Institute has issued some standard that is applicable to seabed operation device therefor.The American Petroleum Institute of so-called API is the main U.S. trade association about oil and gas industry.API is the standard development tissue of ANSI (" ANSI ") approval, also experiences the periodical audit to its process with the standard development procedure operation of checking and approving.API produces standard, recommended practice, standard, code and technical publications, report and the research of the various piece that contains industry.The API standard promotes the use of safety, interchangeable equipment, and promotes through using confirmed good engineering working specification to operate.
API standard 16D has discussed the standard that is used for the Electrical and Electronic chamber, and this Electrical and Electronic chamber is the container that possibly use relief valve above that." Allelectricalandelectronicchambersshallbedoublesealedata llareasexposedtoseawaterorhydrostaticpressureandshouldha veaprovisionforatestport.Thesetestportsshallbepluggedand sealedwhennotinusefortesting " (" all the electric supplies that should on the All Ranges that is exposed to seawater or hydrostatic pressure, carry out dual-seal and should have test port with the electronics chamber.When being not used in test, should clog and seal these test ports.”)(API?16D)。Therefore, the relief valve that between the internal volume of container and outside environments such as subsea, has double seal and a test port will receive an acclaim in industry.In addition, desirable especially be can be as FAT the front side of test seal and the ability of rear side.
Summary of the invention
Aspect one of the present disclosure, the relief valve that is used for pressurized container comprises: housing, and it has the endoporus that between inlet and outlet, extends; Piston, it is positioned at endoporus; And spring, it is arranged near the piston and is configured to piston is biased to operating position.In addition, relief valve comprises the test port that is communicated with endoporus, is arranged on the removable test cord in the test port hermetically, and is arranged on first Sealing and second Sealing in the endoporus, on the test port both sides.Preferably, first Sealing becomes when piston is in the close position, to engage this piston and inlet and outlet is isolated with second seal configurations.
In another aspect of the present disclosure, a kind of relief valve that is used for pressurized container comprises: housing, and it includes an inlet and an outlet; Piston, it is positioned at housing, and this piston is biased to operating position by spring; And first Sealing and second Sealing, they are configured to when piston is in the close position, hydraulically make inlet and outlet to isolate.Preferably, piston structure becomes when the fluid by pressurized container is applied to power on the piston and surpasses spring force and shifts out from operating position.
In another aspect of the present disclosure, a kind of method of test relief valve comprises that the test port through relief valve applies test pressure to the rear side of first Sealing and second Sealing.
Through the description and the appended claims of hereinafter, others of the present disclosure and advantage are obvious.
The accompanying drawing summary
Fig. 1 is according to embodiment of the present disclosure, the relief valve that is in the close position.
Fig. 2 is according to embodiment of the present disclosure, is in and opens or the relief valve of vent position.
Fig. 3 is according to embodiment of the present disclosure, is in the relief valve of test position.
Fig. 4 is according to embodiment of the present disclosure, the relief valve that is in the close position.
Fig. 5 is according to embodiment of the present disclosure, is in the relief valve of vent position.
Describe in detail
Embodiment disclosed herein relates to the relief valve that is used for subsea pressure vessel.More particularly, current embodiment discloses the apparatus and method of the relief valve that is used for subsea pressure vessel.
Referring to Fig. 1, shown sectional view according to embodiment's of the present disclosure relief valve 100.Relief valve 100 comprises the housing 102 with endoporus 104, and endoporus 104 allows inlet 106 and exports being communicated with between 108.Relief valve 100 also comprises the piston 110 that is arranged in the endoporus 104; Be arranged in the endoporus 104 and act on the spring 112 on the piston 110; And first Sealing 114 and second Sealing, 116, the first Sealings 114 and second Sealing, 116 boths along circumferentially being arranged on the piston 110 and being configured to dynamically be sealed on the piston 110.
Existing referring to Fig. 2, shown that the relief valve 100 according to embodiment of the present disclosure is in " releasing " position.Vent position is described to when spring 112 compression and piston 110 are shifted vertically and break away from the sealing engagement with first Sealing 114 and second Sealing 116 (position) in endoporus 104.On the zone of the end face 122 that the pressure of internal tank is applied to piston 110 consistently through entering the mouth.Along with the pressure in the container increases and reaches predeterminated level, the power that is applied to piston 110 end faces 122 becomes greater than the power of spring 112, thereby causes the axially displaced of piston 110.When it was shifted, piston 110 interruptions contacted with first Sealing 114 and second Sealing 116, thereby authorized pressure spills perhaps " releasing " through exporting 108.Should be pointed out that up to piston 110 break away from first Sealing 114 and both salable joints of second Sealing 116 before, pressure possibly all can not pass through relief valve 100 leakages.
Along with being reduced to acceptable level gradually at container inner pressure, the presetting spring force and can overcome the power that applies from container of spring 112, and piston 110 back is shifted with second Sealing 116 and sealably engages, and pressure can not be released herein.Piston 110 continues displacement and sealably engages first Sealing 114, and herein, compression and relief valve are not in the close position spring 112 once more basically.It will be apparent to those skilled in the art that the spring force that acts on the piston can be provided by any device as known in the art, includes but not limited to metal coil spring, Belleville washer (Belleville washer), elastomeric spring etc.
Existing referring to Fig. 3, shown that the relief valve 100 according to embodiment of the present disclosure is in " test " position.Test position is described to remove and pressure can be applied to " rear side " when surface (position) of first Sealing 114 and second Sealing 116 from test port 118 when test cord (120 among Fig. 1 and Fig. 2).The rear side 130 of first Sealing 114 is faces that deviate from inlet 106 of sealing part, and the rear side 132 of second Sealing 116 is faces back to outlet 108 of sealing part.Therefore, the rear side 132 of the rear side 130 of first Sealing 114 and second Sealing 116 is towards each other.
Still referring to Fig. 3, during FAT (FAT), piston 110 keeps that both contact with first Sealing 114 and second Sealing 116.Remove test cord (not shown) to allow " rear side " near first Sealing 114 and second Sealing 116 from test port 118, so that carry out pressure test, and test pressure applies and gets into endoporus 104 through test port 118.Test pressure can be the working pressure of valve, with the analog operation state, perhaps can be any other suitable pressure well known by persons skilled in the art.Can test first Sealing 114 and second Sealing 116 simultaneously, to guarantee the proper seal of Sealing between piston 110 and the endoporus 104.When accomplishing the FAT program, the pressurization termination and the test cord (not shown) of endoporus 104 and test port 118 are re-installed in the test port 118.Those skilled in the art will recognize that under the situation that does not depart from the disclosed embodiments, available testing valve waits replaces test cord.
Existing referring to Fig. 4, shown sectional view according to embodiment's of the present disclosure relief valve 200.Relief valve 200 comprises the housing 202 with endoporus 204, is communicated with between endoporus 204 allows inlet 206 and exports 208.Relief valve 200 also comprises the piston 210 that is arranged in the endoporus 204; Be arranged on the spring 212 in the endoporus; With first Sealing 214 and second Sealing 216 of piston 210 sealing engagement, and test port 218, in test port 218, be provided with test cord 220 removedly and sealably.In addition, piston 210 comprises leak ports 222, and leak ports 222 can comprise circumferential recess, axial notch, boring or any other structure well known by persons skilled in the art.Relief valve 200 is shown as and is in the close position, thus operating position be described to when piston 210 and first Sealing 214 and second Sealing 216 sealably engage do not allow to enter the mouth 206 and outlet 208 between when pressure communication is arranged (position).
Existing referring to Fig. 5, shown sectional view according to embodiment's of the present disclosure relief valve 200.Relief valve 200 is shown as and is in vent position, and wherein piston 210 breaks away from owing to the pressure of chamber interior is shifted and engages with first the salable of Sealing 214.Pressure in the chamber entry port 206 put on the zone of end face 224 of piston 210.When the pressure in the chamber reached certain level, it overcame by spring 212 and is applied to the preset force on the piston 210, and beginning pressure spring 212 and mobile piston 210 break away from and engage with first the salable of Sealing 214.In addition, the displacement of the part of leak ports 222 surpasses second Sealing 216, thereby allows inlet 206 to be communicated with fully with the pressure that exports between 208.
Along with the pressure that puts on end face 224 zones is reduced to the level that is lower than spring 212 preset force; Piston 210 is moved back into and first Sealing, 214 salable joints; And leak ports 222 is moved back into operating position, thereby does not allow to have through endoporus 204 the further connection of pressure.Those skilled in the art will recognize that the spring force that acts on the piston can be provided by any device as known in the art, includes but not limited to metal coil spring, Belleville washer, elastomeric spring etc.
In addition, relief valve 200 can be so that test the mode of the rear side of two Sealings and construct.Referring to Fig. 4, test cord 220 can be removed and test pressure applies and get into endoporus 204 through test port 218 once more.Under the situation that piston 210 is in the close position, test pressure is applied on first Sealing 214 and both rear sides of second Sealing 216.When accomplishing test, pressure is ended and test cord 220 is arranged in the test port 218.Those skilled in the art will recognize that under the situation that does not depart from the disclosed embodiments, available testing valve is replaced test cord.
In addition, alternative of the present disclosure comprises such relief valve: this relief valve comprises Sealing, and wherein, at least one in the Sealing can be metal to metal seal spare.In selected embodiment, metal to metal seal spare can be first or primary seal, and second Sealing can be elastomeric seal.Perhaps, metal to metal seal spare can be second Sealing, and first Sealing is an elastomeric seal.Perhaps, first Sealing and the second Sealing both can be metal to metal seal spare.But should be appreciated that, use the embodiment of metal to metal seal spare possibly have the spring than big spring power, this is because need high contact stress to form metal to metal seal.In addition, alternative of the present disclosure can comprise first sealing area greater than second sealing area.Because the first bigger sealing area, valve possibly be able to discharge under lower pressure or release.
Embodiment of the present disclosure advantageously allows two Sealings are carried out the rear side sealing test.To-and-fro motion as between piston and two Sealings, existing has increased extra dimension to sealing problem.Friction has combined the list of factors that must contend with its wearing and tearing that are associated, and comprises temperature, fluid compatibility and pressure.The Sealing that is used to seal traverse member must satisfy static and dynamic seal (packing) requirement at the contact area of they and fixed component (it is endoporus), and also upward seals effectively at their contact area place in traverse member (being piston in the case).In order to ensure the reliability of sealing, the both sides of test seal cater to the need and are favourable the other way around.
In addition, embodiment of the present disclosure preferably meets API standard 16D, between the internal chamber of this standard-required pressurized container and the outside environments such as subsea " double seal " is arranged.Because relief valve provides connection between the two, so double seal is desirable characteristics.According to API standard 16D, chamber all should be by double seal at the All Ranges that exposes to seawater or hydrostatic pressure.In addition, but the use test port, and when it exists, when being not used in test, should be plugged and seal.The double seal configuration of relief valve is the intelligible built-in redundancy of those skilled in the art.
Though the embodiment about limited quantity has described the present invention, benefit from of the present disclosure it will be apparent to those skilled in the art that and to design other embodiment who does not depart from like category of the present invention disclosed herein.Therefore, category of the present invention should be limited by appended claims only.
Claims (23)
1. relief valve that is used for pressurized container comprises:
Be included in the housing of the endoporus that extends between inlet and the outlet;
Be positioned at the piston of said endoporus;
Be used for said piston is biased to the spring of operating position;
The test port that is communicated with said endoporus;
Be arranged on the removable test cord in the said test port hermetically; And
Be arranged in the said endoporus, first Sealing and second Sealing on the both sides of said test port, said first Sealing becomes when said piston is in said operating position, to engage said piston and makes said inlet and said outlet is hydraulically isolated with second seal configurations.
2. relief valve according to claim 1 is characterized in that, when said piston was in said operating position, said first Sealing was hydraulically isolated said inlet and said test port.
3. relief valve according to claim 1 is characterized in that, when said piston was in said operating position, said second Sealing was hydraulically isolated said outlet and said test port.
4. relief valve according to claim 1 is characterized in that, when said piston was shown in an open position, said inlet and said outlet were in hydraulic communication.
5. relief valve according to claim 4 is characterized in that, when the hydraulic pressure of said ingress surpassed the preload force that is arranged near the spring the said piston, said piston was pushed into said open position.
6. relief valve according to claim 1 is characterized in that, said inlet be communicated with from said pressurized container pressure inside.
7. relief valve according to claim 1 is characterized in that, said outlet is configured to so that release from the pressure of said pressurized container.
8. relief valve according to claim 1 is characterized in that, the integrity of said first Sealing and said second Sealing can be tested through said test port after removing said test cord.
9. relief valve according to claim 1 is characterized in that said relief valve meets API 16D.
10. relief valve according to claim 1 is characterized in that, at least one in said first Sealing and second Sealing is metal to metal seal spare.
11. a relief valve that is used for pressurized container comprises:
The housing that includes an inlet and an outlet;
Be positioned at the piston of said housing, said piston is biased to operating position by spring;
Be configured to first Sealing and second Sealing that said inlet and said outlet are hydraulically isolated; And
Said piston structure becomes when the fluid by said pressurized container is applied to power on the said piston above the power of said spring and shifts out from said operating position;
The test port that extends through said housing and be communicated with the rear side of said first Sealing and said second Sealing; Wherein, The rear side of said first Sealing is the face that deviates from said inlet of this first Sealing, and the rear side of said second Sealing is the face that deviates from said outlet of this second Sealing; And
Be arranged on the removable test cord in the said test port hermetically.
12. relief valve according to claim 11 is characterized in that, said test port is communicated with said piston between said first Sealing and said second Sealing.
13. relief valve according to claim 11 is characterized in that, the integrity of said first Sealing and said second Sealing can be tested through said test port after removing said test cord.
14. relief valve according to claim 11 is characterized in that, said relief valve meets API 16D.
15. relief valve according to claim 11 is characterized in that, said inlet is connected with the fluid of said pressurized container.
16. the method for a test relief valve according to claim 1, said method comprises:
Test port through said relief valve applies test pressure to the rear side of first Sealing and second Sealing; Test said first Sealing and second Sealing simultaneously; The rear side of wherein said first Sealing is the face that deviates from said inlet of this first Sealing, and the rear side of said second Sealing is the face that deviates from said outlet of this second Sealing.
17. method according to claim 16 is characterized in that, test cord is arranged in the said test port removedly.
18. method according to claim 16 is characterized in that, said method meets API16D.
19. method according to claim 16 is characterized in that, said test port is configured to be used for testing the rear side of said first Sealing and second Sealing.
20. the method for a test relief valve according to claim 11, said method comprises:
Test port through said relief valve applies test pressure to the rear side of first Sealing and second Sealing, tests said first Sealing and second Sealing simultaneously.
21. method according to claim 20 is characterized in that, test cord is arranged in the said test port removedly.
22. method according to claim 20 is characterized in that, said method meets API16D.
23. method according to claim 20 is characterized in that, said test port is configured to be used for testing the rear side of said first Sealing and second Sealing.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US91517007P | 2007-05-01 | 2007-05-01 | |
| US60/915,170 | 2007-05-01 | ||
| PCT/US2008/061979 WO2009005883A2 (en) | 2007-05-01 | 2008-04-30 | Pressure relief valve and method for subsea components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101675282A CN101675282A (en) | 2010-03-17 |
| CN101675282B true CN101675282B (en) | 2012-06-13 |
Family
ID=40226742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800143794A Expired - Fee Related CN101675282B (en) | 2007-05-01 | 2008-04-30 | Pressure relief valve and method for subsea components |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP2160535A4 (en) |
| CN (1) | CN101675282B (en) |
| AR (1) | AR066413A1 (en) |
| AU (1) | AU2008270957B2 (en) |
| BR (1) | BRPI0809878A2 (en) |
| CA (1) | CA2685771C (en) |
| MX (1) | MX2009011845A (en) |
| MY (1) | MY154506A (en) |
| SG (1) | SG10201509023QA (en) |
| WO (1) | WO2009005883A2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8393399B2 (en) * | 2010-11-30 | 2013-03-12 | Hydril Usa Manufacturing Llc | Blowout preventer with intervention, workover control system functionality and method |
| CN105003701B (en) * | 2015-08-03 | 2017-09-22 | 南京理工大学 | A kind of variable pressure maintaining valve of Opening pressure |
| DE102015220306A1 (en) * | 2015-10-19 | 2017-04-20 | Robert Bosch Gmbh | Pressure-balancing device |
| CN106523782A (en) * | 2016-12-23 | 2017-03-22 | 王小东 | Multifunctional safety valve capable of being used for pressure test |
| CN109681684B (en) * | 2019-01-21 | 2020-08-04 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Emergency load rejection safety valve suitable for submersible pipeline system |
| CN110761757B (en) * | 2019-11-29 | 2021-08-06 | 李杨 | Multi-pipe type high-efficiency stratified water injection adjusting device for balancing water injection quantity |
| CN112754372B (en) * | 2020-12-28 | 2022-05-24 | 科沃斯商用机器人有限公司 | Sealing structure and self-moving cleaning robot |
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| DE3518472A1 (en) * | 1985-05-23 | 1986-11-27 | Jörn 4320 Hattingen Dams | Pressure relief valve |
| AU633915B2 (en) * | 1989-05-19 | 1993-02-11 | Richard Voss Grubenausbau Gmbh | Pressure limiting valve with stepped or double piston |
| KR100430786B1 (en) * | 2002-03-22 | 2004-05-17 | 손형모 | A check valve |
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2008
- 2008-04-30 WO PCT/US2008/061979 patent/WO2009005883A2/en active Application Filing
- 2008-04-30 CN CN2008800143794A patent/CN101675282B/en not_active Expired - Fee Related
- 2008-04-30 EP EP08826060.9A patent/EP2160535A4/en not_active Withdrawn
- 2008-04-30 BR BRPI0809878-6A patent/BRPI0809878A2/en not_active IP Right Cessation
- 2008-04-30 AU AU2008270957A patent/AU2008270957B2/en not_active Ceased
- 2008-04-30 SG SG10201509023QA patent/SG10201509023QA/en unknown
- 2008-04-30 MX MX2009011845A patent/MX2009011845A/en active IP Right Grant
- 2008-04-30 MY MYPI20094463A patent/MY154506A/en unknown
- 2008-04-30 CA CA2685771A patent/CA2685771C/en not_active Expired - Fee Related
- 2008-05-02 AR ARP080101856A patent/AR066413A1/en not_active Application Discontinuation
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| US4314579A (en) * | 1980-03-18 | 1982-02-09 | Charles Wheatley | Gate valve |
| US4614201A (en) * | 1981-06-15 | 1986-09-30 | King Frank E | Break-away coupling for hoselines |
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| US6279382B1 (en) * | 1998-02-10 | 2001-08-28 | Nec Corporation | Sealed vessel and method of testing the same |
| US6675824B2 (en) * | 2000-12-21 | 2004-01-13 | Taema | Valve with wilder opening and pressure regulator equipped with such a valve |
| CN2530116Y (en) * | 2002-03-21 | 2003-01-08 | 上海航空电器厂 | Start/close decompression valve of high pressure cleaning machine |
Also Published As
| Publication number | Publication date |
|---|---|
| AR066413A1 (en) | 2009-08-19 |
| MY154506A (en) | 2015-06-30 |
| AU2008270957A1 (en) | 2009-01-08 |
| WO2009005883A3 (en) | 2009-07-09 |
| WO2009005883A2 (en) | 2009-01-08 |
| SG10201509023QA (en) | 2015-12-30 |
| AU2008270957B2 (en) | 2014-04-03 |
| EP2160535A2 (en) | 2010-03-10 |
| BRPI0809878A2 (en) | 2014-09-30 |
| EP2160535A4 (en) | 2017-06-07 |
| CA2685771A1 (en) | 2009-01-08 |
| MX2009011845A (en) | 2009-11-26 |
| CA2685771C (en) | 2015-10-20 |
| CN101675282A (en) | 2010-03-17 |
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